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Biographical Sketch of
Robert Stevenson
Civil
Engineer, by Alan Stevenson (1851) |
Robert Stevenson was
born at Glasgow on the 8th June 1772, and died at Edinburgh on the 12th
July 1850, in the seventy-ninth year of his age. His father, Alan
Stevenson, was a partner in a West India House in Glasgow, and died in
the island of St Christopher, while on a visit to his brother, who
managed the business abroad. His only son Robert, the subject of this
memoir, was then an infant, and, with his mother, was ultimately left in
circumstances of the greatest difficulty; for the same epidemic fever
which deprived him of his father carried off his uncle also, at a time
when his loss operated most disadvantageously on the business which he
had superintended, and very many years elapsed before any funds in which
my father had an interest were realised. His mother's circumstances now
compelled her to take advantage of a charity school for him during his
infancy; and the high spirit of the man is well brought out by the fact
that he devoted his first earnings in life, at the Cumbrae Lighthouse,
to the repayment to that institution of what he viewed as a debt. In
this manner was my father's early education conducted, although, as the
sequel shows, with success, yet under circumstances which could not by
any means be called favourable. This success was chiefly due to the
energy of his mother, Jane Lillie, who was a woman of great prudence and
remarkable fortitude, based on deep convictions of religion. It appears,
from some memoranda left by my father for the information of his family,
that his mother had intended him for the ministry, with a view to which
he had been sent to the school of a famous linguist of his day, Mr
Macintyre. Circumstances, however, occurred which entirely changed his
prospects and pursuits. Soon after he had attained his fifteenth year,
his mother was married to Mr Thomas Smith, who had commenced life as a
tinsmith and lampmaker in Edinburgh, and who, being an ingenious
mechanician, afterwards directed his attention to the subject of
lighthouses. So successful were Mr Smith's endeavours to improve the
mode of illumination, by substituting oil lamps with parabolic mirrors
for the open coal-fires which formerly served for beacons to the
mariner, that his improvements attracted the notice of Professor Robison
and Sir David Hunter Blair, and he was appointed engineer to the
Northern Lighthouse Board, immediately after its constitution by the Act
of 1786. In these pursuits my father had rendered himself useful to Mr
Smith, who intrusted him, at the early age of nineteen, with the
superin-tendenoe of the erection of a lighthouse on the island of Little
Cumbrae in the river Clyde, according to a plan which Mr Smith had
furnished to the Trustees for the Clyde Navigation.' This connection
soon led to his adoption as Mr Smith's partner in business, and in 17.09
to his marriage with his eldest daughter; and as the entire management
of the lighthouse business had already for some years, with the
concurrence of the Board, devolved upon him, lie naturally succeeded Mr
Smith as engineer, an office which he resigned in 1843, after having
fulfilled its arduous duties for about half a century.
During the cessation of the works at Cumbrae in winter, Mr Stevenson,
who, even at that time, had determined to follow out the profession of a
civil engineer, and had begun to feel the want of systematic, training,
applied himself, it appears, with great zeal to the practice of
surveying and architectural drawing, and to the study of the
mathematical and physical sciences, at the Andersonian Institution at
Glasgow. Of the kindness of Dr Anderson, who presided over that
institution, he ever entertained a most grateful remembrance, and often
spoke of him as one of his best advisers and kindest friends. In the
manuscript memoranda already noticed, he thus records his obligations to
him. It was " the practice of Professor Anderson kindly to befriend and
forward the views of his pupils ; and his attention to me, during the
few years I had the pleasure of being known to him. was of a very marked
kind, for he directed my attention to various pursuits, with, the view
to my coming forward as an engineer."
After completing the Cumbrae Lighthouse, he was engaged under Mr Smith
in erecting lighthouses on the Pentland Skerries in Orkney, in returning
from whence, in 1794, he made a narrow escape from shipwreck in the
sloop Elizabeth of Stromness. The Elizabeth had proceeded as far as
Kinnaird Head on her southward voyage, and was then becalmed when within
about three miles of the shore. The captain kindly landed my father, who
continued his journey to Edinburgh by land. A very different fate,
however, awaited his unfortunate shipmates. A violent gale came on,
which drove the Elizabeth back to Orkney, where she was totally wrecked,
and all on board perished!
Notwithstanding his active duties in summer, he was so zealous in the
pursuit of knowledge that he contrived, during several successive
winters, on his return from Orkney, to attend the philosophical classes
at the University of Edinburgh. In this manner he attended Professor
Playfair's second and third mathematical courses, two sessions of
Professor Robison's natural philosophy, two courses of chemistry under
Mr Hope, and two of natural history under Professor Jameson. To these he
added a course of moral philosophy under Dugald Stewart, and also a
course of logic, and one of agriculture. "I was prevented, however," he
remarks, in the manuscript memoranda, "from taking my degree of M.A. by
my slender knowledge of Latin, in which my highest book was the Orations
of Cicero, and
by my total want of Greek." Such zeal in the pursuit of knowledge under
so many discouragements, and views so enlarged of the benefits and value
of a liberal education, were characteristics of a mind of no ordinary
vigour.
The most important work of Mr Stevenson's life is the Bell Rock
Lighthouse. Of the progress of that great undertaking he has left a
lasting memorial and most interesting narrative in his " Account," a
quarto volume of upwards of 500 pages, which was written to his
dictation by his only daughter. But there are some circumstances
connected with the early history of
that work which, while they could not properly have found a place in his
own narrative, have been noticed in the above-mentioned manuscript
memoranda, from which I shall transcribe a few paragraphs detailing his
early efforts and disappointments whilst designing that lighthouse:—
"All know the difficulties of the erection of the
Eddystone Lighthouse, and the casualties to which that edifice had been
liable; and in comparing the two situations, it was generally remarked
that the Eddystone was barely covered by the tide at high
water, while
the Bell Rock was barely uncovered at low
locder.
"I had much to contend with in the then limited state of
my experience; and I had in various ways to bear up against public
opinion as well as against interested parties. I was in this state of
things, however, greatly supported, and I would even say often
comforted, by Mr Clerk of Eldin, author of the System of Breaking the
Line in Naval Tactics. Mr Clerk took great interest in my models, and
spoke much of them in scientific circles—he carried men of science and
eminent strangers to the model-room which 1 had provided in Merchants'
Hall, of which he sometimes carried the key, both when I was at home and
while I was abroad. He introduced me to Lord Webb Seymour, to Admiral
Lord Duncan, and to Professors Robison and Playfair, and others. Mr
Clerk had been personally known to Smeaton, and used occasionally to
speak oi him to me."
It is impossible to read this little narrative without feeling a respect
for Mr Clerk's hearty enthusiasm, and perceiving the beneficial
influence which a kindly disposition, when thus united with an active
and inventive mind like his, is calculated to produce on the prospects
and pursuits of a young man, by stimulating an honourable emulation and
discouraging a desponding spirit.
"But at length," the memorandum continues, "all
difficulties with the public as well as with the better informed few,
were dispelled by the fatal effects of a dreadful storm from the X.E,
which occurred in December 1799, when it was ascertained that no fewer
than seventy sail of vessels were stranded or lost, with many of their
crews, upon the coast of Scotland alone ! Many of them, it was not
doubted, might have found a safe asylum in the Firth of Forth, had there
been a lighthouse upon the Bell Rock, on which, indeed, it was generally
believed the York, of 74 guns, with all hands, perished, none being left
to tell the tale! The coast for many miles exhibited portions of that
fine ship. There was now, therefore, but one voice,—'There must be a
lighthouse erected on the Bell Rock.'
Previous to this dreadful storm I had prepared my pillar
formed model, a section of which is shown in Plate VII. of the Account
of the. Bell Rock Lighthouse. Early
in the year 1800, I for the first time landed on the rock to see the
application of my model to the situation for which it was designed and
made. On this occasion I was accompanied by my friend Mr James Haldane,
architect, whose pupil I had been for architectural drawing. Our landing
was at low water of a spring-tide, when a good spare of
rock was above water, and then the realities of its danger were amply
exemplified by the numerous relics which were found in its crevices,
such as a ship's marking-iron, a piece of a kedge-anchor and a cabin
stove, a bayonet, cannon-ball, silver shoebuckle, crowbars, pieces of
money, and other evidences of recent shipwreck. I haft no sooner set
foot upon the rock than I laid aside all idea of a pillar-formed
structure, fully convinced that a building on similar principles with
the Eddystone would be found practicable.
"On my return from this visit to the rock, I immediately
set to work in good earnest with a design of a stone lighthouse, and
modelled it. Of this design a section is also given in Plate VII. above
noticed. I accompanied this design with a report or memorial to the
Lighthouse Board, which I gave in the Appendix of my 'Account' at p.
410. The pillar formed plan 1 estimated at £15,000, and the stone
building at £12,000.1 Put
still I found that I had not made much impression on the board on the
score of expense, for they feared it would cost much more than forty or
fifty thousand pounds. Here, therefore, the subject rested with the
Board for a time.
In order to fortify his views, he father requested the Board to take the
advice of Mr Telford, and ultimately of Mr Ronnie, who concurred with
him in thinking a stone tower practicable. But it appears that still the
banks would not advance money on the security, and the Board resolved to
apply for an Act of Parliament.
"To the very last the bankers were in doubt as to their
security on the dues for so great and hazardous an undertaking; and the
bill included an authority to borrow £25,000 from the Exchequer. I
attended this bill through Parliament. Mr Rennie and myself were
examined; but the only plans and information otherwise before the
Committee were those already noticed, which I had laid before the Board
in 1800.
"The Lighthouse Act having obtained the royal assent, I
began to feel a new responsibility. The erection of a lighthouse on a
rock about twelve miles from land, and so low in the water that the
foundation-course must be at least on a level with the lowest tide, was
an enterprise so full of uncertainty and hazard, that it could not fail
to press on my mind. I felt regret that I had not had the opportunity of
a greater range of practice to fit me for such an undertaking. But I was
fortified by an expression of my friend Mr Clerk, in one of our
conversations upon its difficulties. This
work,' said he, 'is unique, and can be little forwarded by experience of
ordinary masonic operations. In this case, Smeaton's Narrative must be
the text-book, and energy and perseverance the
pratique"
Mr Rennie, also, who had been appointed to advise with my father in case
of emergency, was not behind in administering comfort, and wrote to him,
during the progress of the work, in the following cheering terms: "Poor
old fellow" (alluding to the name of Smeaton), "I hope he will now and
then take a peep of us, and inspire you with fortitude and courage to
brave all difficulties and all dangers, to accomplish a work which will,
if successful, immortalise you in the annals of fame."
How well Mr Stevenson met the demands which, in the course of his great
enterprise, were made on his perseverance, fortitude, and self-denial,
the history of the operations, and their successful completion,
abundantly show. The work was, indeed, in all respects, peculiarly
suited to his tastes and habits; and Mr Clerk truly, although perhaps
unconsciously, characterised the man, in his terse statement of what
would be required of him. No one can read his account of the Bell Rock
Lighthouse without perceiving the justness of this estimate of his
character. His daily cheerful participation in all the toils and hazards
which were, for two seasons, endured in the floating light-ship, and
afterwards in the timber house or beacon, over which the waves broke
with prodigious force, and caused a most alarming twisting movement
of its main supports, were proofs not merely of calm and enduring
courage, but of great self-denial and enthusiastic devotion to his
calling. In one occasion in particular, his fortitude and presence of
mind were most severely tried, and well they stood the- test. I shall
give the narrative of this most interesting adventure in his own words;
but I cannot do so without expressing the regret I have so often felt,
that, from some mistaken delicacy, he had been induced throughout his
"Account" to speak of himself in the third person as "the writer." This
has encumbered the style with artificial phraseology, has damped the
ardour of the narrator, and in some instances has led to an awkward
ambiguity. The following passage possesses great interest:—
"Soon after the artificers landed they commenced work;
but the wind coming to blow hard, the Smeaton's boat and crew, who had
brought their complement of eight men to the rock, went off to examine
her riding-ropes, and see that they were in proper order. The boat had
no sooner reached the vessel than she went adrift, carrying the boat
along with her; and both had even got to a considerable distance before
this situation of things was observed, every one being so intent upon
his own particular duty that the boat had not been seen leaving the
rock. As it blew hard, the crew, with much difficulty, set the mainsail
upon the Smeaton, with a view to work her up to the buoy, and again lay
hold of the moorings. By the time that she was got round to make a tack
towards the rock, she had drifted at least three miles to leeward, with
the boat astern; and having both the wind and tide against her, the
writer perceived, with no little anxiety, that she could not possibly
return to the rock till long after its being overflowed ; for, owing to
the anomaly of the tides, formerly noticed, the Bell Rock is completely
under water before the ebb abates to the offing.
"In this perilous predicament, indeed, he found himself
placed between hope and despair ; but certainly the latter was by much
the most- predominant feeling of his mind,—situate upon a sunken rock,
in the middle of the ocean, which, in the progress of the flood-tide,
was to be laid under water to the depth of at least twelve feet in a
stormy sea. There were this morning in all thirty-two persons on the
rock, with only two boats, whose complement, even in good weather, did
not exceed twenty-four sitters ; but to row to the floating light with
so much wind, and in so heavy a sea, a complement of eight men for each
boat was as much as could with propriety be attempted, so that in this
way about one-half of our number was unprovided for. Under these
circumstances, had the writer ventured to despatch one of the boats, in
expectation of either working the Smeaton sooner up towards the rock, or
in hopes of getting her boat brought to our assistance, this must have
given an immediate alarm to the artificers, each of whom would have
insisted upon taking to his own boat, and leaving the eight artificers
belonging to the Smeaton to their chance. Of course, a scuffle might
have ensued, and it is hard to say, in the ardour of men contending for
life, where it might have ended. It has even been hinted to the writer
that a party of the pi'damn were
determined to keep exclusively to their own boat against all hazards.
"The unfortunate circumstance of the Smeaton and her boat
having drifted was, for a considerable time, only known to the writer,
and to the lamling-master, who removed to the further point of the rock,
where he kept his eye steadily upon the progress of the vessel. While
the artificers were at work, chiefly in sitting or kneeling postures,
excavating the rock, or boring with the junipers, and while their
numerous hammers, and the sound of the smith's anvil, continued, the.
situation of things did not appear so awful. In this state of suspense,
with almost certain destruction at hand, the water began to rise upon
those who were at work on the lower parts of the sites of the beacon
arid lighthouse. From the run of sea upon the rock, the forge fire was
also sooner extinguished this morning than usual, and the volumes of
smoke having ceased, objects in every direction became visible from all
parts of the rock. After having had about three hours' work, the men
began, pretty generally, to make towards their respective boats for
their jackets and stockings, when, to their astonishment, instead of
three they found only two boats, the third being adrift with the Smeaton.
Not a word was uttered by any one, but all appeared to be silently
calculating their numbers, and looking to each other with evident marks
of perplexity depicted in their countenances. The landing-master,
conceiving that blame might be attached to him for allowing the. boat to
leave the. rock, still kept at a distance. At this critical moment, the
author was standing upon an elevated part of Smith's Ledge, where he
endeavoured to mark the progress of the Smeaton, not a little surprised
that the crew did not cut the praam adrift, which greatly retarded her
way, and amazed that some, effort was not making to bring at least the
boat, and attempt our relief. The workmen looked stead fastly upon the
writer, and turned occasionally towards the vessel, still far to
leeward. All this passed in the most perfect silence, and the melancholy
solemnity of the, group made an impression never to be
effaced from his mind.
"The writer had ail along been considering various
schemes—providing the men could be kept under command—which might be put
in practice for the general safety, in hopes that the Smeaton might be
able to pick up the boats to leeward, when they were obliged to leave
the rock. He was, accordingly, about to address the artificers on the
perilous nature of their circumstances, and to propose that all hands
should unstrip their upper clothing when the higher parts of the rock
were laid under water; that the seamen should remove every unnecessary
weight and encumbrance from the boats; that a specified number of men
should go into each boat, and that the remainder should hang by the
gunwales, while the boats were to be rowed gently towards the Smeaton,
as the course to the Pharos or floating light lay rather to windward of
the rock. Put when he attempted to speak, his mouth was so parched that
his tongue refused utterance, and he now learned by experience that the
saliva is as necessary as the tongue itself for speech. He then turned
to one of the pools on the rock and lapped a little water, which
produced an immediate relief. But what was his happiness when, on rising
from this unpleasant beverage, some one called out 'a boat! a boat!' and
on looking around, at no great distance, a large boat was seen through
the haze making towards the rock. This at once enlivened and rejoiced
every heart. The timeous visitor proved to be James Spink, the Bell Bock
pilot, who had come express from Arbroath with letters. Spink had for
some time seen the Smeaton, and had even supposed, from the state, of
the weather, that all hands were on board of her, till ho approached
more nearly and observed people upon the rock. Upon this fortunate
change of circumstances sixteen of the artificers were sent at two trips
in one of the boats, with instructions for Spink to proceed with them to
the floating light. This
being accomplished, the remaining sixteen followed in the two boats
belonging to the service of the rock. Every one felt the most perfect
happiness at leaving the Bell Rock this morning, though a very hard and
even dangerous passage to the floating light still awaited us, as the
wind by this time had increased to a pretty hard gale, accompanied with
a considerable swell of sea. The boats left the rock about nine, but did
not reach the vessel till twelve o'clock noon, after a most disagreeable
and fatiguing passage of three hours. Every one was as completely
drenched in water as if he had been dragged astern of the boats."
The state of suffering and discomfort as well as danger on board the
floating light, which lay moored off the rock during the first two
seasons of the work, before the timber Beacon was used as a habitation,
is described in the following passage, which presents a striking
illustration of the continual anxiety that must have existed in the
minds of those engaged in the work, and of the frequent calls for
energetic and courageous exertion.
"About two o'clock p.m.
a great alarm was given throughout the ship, from the effects of a very
heavy sea which struck her, and almost filled the waist, pouring down
into the berths below, through every cliink and crevice of the hatches
and skylights. From the motion of the vessel being thus suddenly
deadened or checked, and from the flowing in of the water above, it is
believed there was not an individual on board who did not think, at the
moment, that the vessel had foundered and was in the act of sinking. The
writer could withstand this no longer, and as soon as she again began to
range to the sea, he determined to make another effort to get upon deck.
"It being impossible to open any of the hatches in the
fore part of the ship in communicating with the deck, the watch was
changed by passing through the several berths to the companion-stair
leading to the quarter-deck. The writer, therefore, made the best of his
way aft, and on a second attempt to look out, ho succeeded, and saw
indeed an astonishing sight. The seas or waves appeared to be ten or
fifteen feet in height of unbroken water, and every approaching billow
seemed as if it would overwhelm our vessel, but she continued to rise
upon the waves, and to fall between the seas in a very wonderful manner.
It seemed to be only those, seas which caught her in the act of rising
which struck her with so much violence, and threw such quantities of
water aft. On deck there was only one solitary individual looking out,
to give the alarm in the event of the ship breaking from her moorings.
The seaman on watch continued only two hours ; he had no greatcoat nor
overall of any kind, but was simply dressed in his ordinary jacket and
trousers; his hat was tied under his chin with a napkin, and he stood
aft the foremast, to which he had lashed himself with a gasket or small
rope round his waist, to prevent his falling upon deck or being washed
overboard. Upon deck everything that was moveable was out of sight,
having either been stowed below previous to the gale, or been washed
overboard Some trifling parts of the quarter-boards were damaged by the
breach of the sea, and one of the boats upon deck was about one third
full of water, the oyle-hole or drain having been accidentally stopped
up, and part of the gionwale had received considerable injury. Although
the previous night had been a very restless one, it had not the effect
of inducing sleep in the writer's berth on the succeeding one; for
having been so much tossed about in bed during the last thirty hours, he
f< wild no easy spot to turn to, and his body was all sore to the touch,
which ill accorded with the unyielding materials with which his bed
place was surrounded.
"This morning about eight o'clock the writer was
agreeably surprised to see the scuttle of his cabin skylight removed,
and the bright rays of the sun admitted. Although the ship continued to
roll excessively and the sea was still running very high, yet the
ordinary business on board seemed to be going forward on deck. It was
impossible, to steady a telescope so as to look minutely at the progress
of the waves, and trace their brcach upon the Bell Bock, but the height
to which the cross-running waves rose in sprays, when they met each
other, was truly grand, and the continued roar and noise of the sea was
very perceptible to tho ear. To estimate the height of the sprays at 40
or 50 feet would surely be within the mark. Those of the workmen who
were not much afflicted with sea-sickness came upon deck, and the
wetness below being dried up, the cabins were again brought into a
habitable state. Every one seemed to meet as if after a long absence,
congratulating his neighbour upon the return of good weather, little
could be said as to the comfort of the vessel; but after riding out such
a gale, no one felt the least doubt or hesitation as to the safety and
good condition of her moorings. The master and mate were extremely
anxious, however, to heave in the hempen cable, and see the state of the
clinch or iron ring of the chain cable. But the vessel rolled at such a
rate that the seamen could not possibly keep their feet at the windlass,
nor work the handspokes, though it had been several times attempted
since the gale took off.
'"About twelve noon, however, the vessel's motion was
observed to be considerably less, and the sailors were enabled to walk
upon deck with some degree of freedom. But to the astonishment of every
one it was soon discovered that the floating light was adrift! The
windlass was instantly manned, and the men soon gave out that there was
no strain upon the cable. The mizzen sail, which was bent for the
occasional purpose of making the vessel ride more easily to the tide,
was immediately set, and the other sails were also hoisted in a short
time, when, in no small consternation, we bore away about one mile to
the south-westward of the former station, and there let go the best
bower-anchor and cable, in twenty fathoms water, to ride until the swell
of the sea should foil, when it might be practicable to grapple for the
moorings, and find a better anchorage for the ship.
" As soon as the deck could be cleared the cable-end was
hove up, which had parted at the distance of about 50 fathoms from the
chain moorings. On examining the cable, it wan found to be considerably
chafed, but where the separation took place, it appeared to be worn
through, or cut shortly off. How to account for this would be difficult,
as the ground, though rough and gravelly, did not, after much sounding,
appear to contain any irregular parts. It was therefore conjectured that
the cable must have hooked some piece of wreck, as it tlid not appear
from the state of the wind and tide that the vessel could have fouled her
anchor when she veered round with the wind, which had shifted in the
course of the night from N. E. to N.N.W.
"Be this as it may, it was a circumstance quite out of
the power of man to prevent, as, until the ship drifted, it was found
impossible to heave up the cable. But what ought to have been the
feeling of thankfulness to that Providence which regulates and appoints
the lot of man, when it is considered that if this accident had happened
during the storm, or in the night after the wind had shifted, the
floating light must inevitably have gone ashore upon the Bell Rock. In
short, it is hardly possible to conceive any case more awfully
distressing than our situation would have been, or one more disastrous
to the important undertaking in which we were engaged."
The Beacon or Barrack, which was afterwards erected on the rock as a
substitute for the floating li-lit, was inhabited by Mr Stevenson and
twenty-eight men. It was a singular habitation, somewhat resembling a
pigeon-house, perched on logs, on which the tide rose sixteen feet in
calm weather, and was exposed to the assault of every wave. Of the
perils and discomforts of such a habitation, the following passages give
a lively picture :—
"This scene" (the sublime appearance of the waves) "he
greatly enjoyed while sitting at his window. Each wave approached the
Beacon like a vast scroll unfolding, and in passing discharged a
quantity of air which he not only distinctly felt, but was even
sufficient to lift the leaves of a book which lay before him.....
"The gale continues with unabated violence to-day, and
the sprays rise to a still greater height, having been carried over the
masonry of the building, or about 90 feet above the level of the sea. At
four o'clock this morning it was breaking into the cook's berth (on the
Beacon), when he rang the alarm-bell, and all hands turned out to attend
to their personal safety. The floor of the smith's or mortar gallery was
now completely burst up by the force of the sea, when the whole of the
deals and the remaining articles upon the floor were swept away, such as
the cast-iron mortar-tubs, the iron hearth of the forge, tho smith's
bellows, and even his anvil, were thrown down upon the rock. The
boarding of the cook house, or storey above the smith's gallery, was
also partly carried away, ami the brick and plaster work of the
fireplace shaken and loosened. It was observed during this gale that the
beacon- house had a good deal of tremor, but none of that 'twisting
motion,' occasionally felt and complained of before the additional
wooden struts were set up for the security of the principal beams; hut
this effect hail more especially disappeared ever since the attachment
of the great horizontal iron bars in connection with these supports,
instead of the chain-braces shown in Plate Till. Before the tide rose to
its full height to-day, some of the artificers passed along the bridge
into the lighthouse, to observe the effects of the sea upon it, and they
reported that they had felt a slight tremulous motion in the building
when great seas struck it in a certain direction about high-water mark.
On this occasion the sprays were again observed to wet the balcony, and
even to come over the parapet 'Wall into
the interior of the light-room. In this state of the weather, Captain
Wilson and the crew of the ' Floating Light' wore much alarmed for the
safety of the artificers upon the rock, especially when they observed
with a telescope that the floor of the smith's gallery had been carried
away, and that the triangular cast-iron sheer-crane was broken down. It
was quite impossible, however, to do anything for their relief until the
gale should take off.
"The writer's cabin measured not more than 4 feet 3
inches in breadth on the floor : and though, from the oblique direction
of the beams of the Beacon it widened towards the top, yet it did not
admit of the full extension of his arms when he stood on the floor;
while its length was little more than sufficient for suspending a
cot-bed during the night, calculated for being triced tip to the roof
during the day, which left free room for the admission of occasional
visitants. His folding-table was attached with hinges immediately under
the. small window of the apartment; and his books, barometer,
thermometer, portmanteau, and two or three camp-stools, formed the bulk
of his movables. His diet being plain, the paraphernalia of the table
were proportionately simple ; though everything had the appearance of
comfort and even of neatness, the walls being covered with green cloth,
formed into panels with red tape, and his bed festooned with curtains of
yellow cotton stuff. If, on speculating on the abstract wants of man in
such a state of exclusion, one were reduced to a single book, the sacred
volume, whether considered for the striking diversity of its story, the
morality of its doctrine, or the important truths of its Gospel, would
have proved by far the greatest treasure."
The great merit due to Mr Stevenson, as the architect of the Bell Rock
Lighthouse, lies in his bold conception of, and confident unshaken
belief in, the possibility of executing a tower of masonry on the Bell
Hock, which being left dry only at very low tides, and covered at high
water to the depth of sixteen feet, obviously presented much greater
difficulty than the Eddystone. But his mechanical skill in carrying on
the work is also deserving of high praise. Not only did he conceive the
plan of the jib and balance
cranes—which
he applied, with much advantage, in the erection of the tower—but his
zeal, ever alive to the possibility of improving on the conceptions of
his great master, Smeaton, led him to introduce some very advantageous
changes in the arrangements of the masonry of the tower ; and, in
particular, as described below, he converted the floors of the
apartments into conservative ties, while in the Eddystone they exert an
outward thrust, which the architect counteracted by metallic chains
imbedded in a groove tilled with molten lead.
"The floor-courses of the Bell Bock Lighthouse lay
horizontally upon the walls, as will be seen the sections in Hates VII.
and XVI. They consisted in all of eighteen blocks, but only sixteen were
laid in the first instance, as the centre stones were necessarily left
out, to allow the shaft of the balance-crane to pass through the several
apartments of the building. In the same manner also the stone which
formed the interior side of the man-hole was not laid till after the
centre stone was in its place and the masonry of the walls completed.
The number of stones above alluded to are independently of the sixteen
joggle pieces with which the principal blocks of the floors were
connected, as shown in the diagrams of Plates VII. and XIII. The floors
of the Eddystone Lighthouse, on the contrary, were constructed of an
arch form, and the haunches of the arches bound with chains, to prevent
their pressing outward to the injury of the walls. In this, Mr Smeaton
followed the construction of the dome of St Paul's; and this mode might
also be found necessary at the Eddystone, from the want of stones in one
length to form the outward wall and floor, in the, then state of the
granite quarries of Cornwall At Mylnetield quarry, however, there was no
difficulty in procuring stones of the requisite dimensions; and the
writer foresaw many advantages that would arise from having the stones
of the floors to form part of the outward walls without introducing the
system of arching. In particular, the pressure of the floors upon the
walls would thus be perpendicular ; for as the stones were prepared in
the sides with groove
and feather, after
the manner of the common house-floor, they would, by this means, form so
many girths, binding the exterior walls together, as will be understood
by examining the diagrams and section of Plate VII., with its
letterpress description; agreeably to which, he had modelled the floors
in his original designs for the Bell Rock, which were laid before the
Lighthouse Board in the year 1800."
The Commissioners entertained a high sense of my father s services at
the Bell Rock Lighthouse; and as many of them took a deep interest in
the whole of that remarkable work, and paid occasional visits to it
during its progress, they were well able to appreciate the ability and
zeal with which he devoted himself to this arduous task. It was moved by
the late Sir William Rao, Baronet, then Lord Advocate of Scotland, at a
meeting held in the lighthouse itself on the 19th .July 1824—"That a
bust of Mr Robert Stevenson be obtained and placed iu the library of the
Bell Rock Lighthouse, in testimony of the sense entertained by the
Commissioners of his distinguished talent and indefatigable zeal in the
erection of that lighthouse." A beautiful bust, in marble, by Samuel
Joseph, from which the plate prefixed to this memoir was taken, was
accordingly placed in the library of the lighthouse. From its striking
resemblance, it recalls in a very pleasing manner the memory of my
father, coupled with many of bis counsels delivered on the spot during my
frequent visits to the Bell Bock in his company.
It appears, from the minutes of the Commissioners, that my father
performed his first tour of inspection of the lighthouses, and made the
Annual Report to the Board, in the year 1707. During the long period of
his incumbency which followed, he designed and executed twenty-three
lighthouses in the district of the Commission, many of them in
situations which called for much forethought and great energy. All his
works were characterised by the same sagacity and comprehensive views,
and exhibit successive stages of improvement, equally indicative of the
growing prosperity of the Board, and the alacrity and zeal with which
their engineer laboured in his vocation. In no country has the Catoptric system
of illuminating lighthouses been brought to so high a degree of
perfection as in Scotland; and in consequence of information which he
received from Colonel Colby, of the invention of the Dioptric light
by Fresnel, my father was the first to bring the merits of that system
before the Commissioners of Northern Lighthouses, in his
Report
of December 1821. Whether we consider the accuracy and beauty of the
optical apparatus, the arrangements of the buildings, or the discipline
observed by the light-keepers of the Northern Lighthouses, we cannot
fail to recognise the impress of that energetic and comprehensive cast
of mind which directed the whole. With the strictest propriety my father
may be said to have created and perfected the lighthouse system of
Scotland. His merits indeed, in this respect, were generally
acknowledged in other quarters; and many of the Irish lighthouses, and
several lighthouses in our colonies, were fitted up with apparatus
prepared under his superintendence. "While writing on this subject, I
can hardly omit to quote the ©pinion of the Astronomer-Royal, formed
after having inspected lighthouses, both in this country and in France.
Mr Airev says, in his Report to the Royal Commission on Lighthouses,
dated October 10, 1860:—"This lighthouse (Girdleness, in Aberdeenshire)
contains two systems of lights. The lower, at about two-fifths the
height of the building, consists of thirteen parabolic reflectors, of
the usual form. I remarked in these that, by a simple construction which
I have not seen elsewhere, great facility is given for the withdrawal
and safe return of the lamps, for adjusting the lamps, and cleaning the
mirrors;" and, in closing his Report, he adds, "It is the best
lighthouse that I have seen." In the course of his labours as engineer
to the Lighthouse Board, my father's attention was much given to the
subject of distinction anion-lights, a matter of the utmost importance
in narrow seas, where many lights are required. He was the inventor of
two useful distinctions—the intermittent and Flashing lights,
for the latter of which he received from the late King of the
Netherlands a gold medal, as a mark of his Majesty's approbation. In the
first of those distinctions the light is suddenly obscured and as
suddenly revealed to sight, at unequal intervals of time, in a manner
which completely distinguishes it from the ordinary revolving light,
which from darkness gradually increases
in power till it reaches its brightest phase, and then gradually
declines until it is again obscured. The flashing light exhibits, by
means of a rapid revolution of the frame which carries the lamps, and a
peculiar arrangement in their position, a sudden flash of great power,
once in five seconds of time.
Besides his official duties as engineer to the Lighthouse Board, he took
a large share in the general engineering of his day, and acted on many
occasions in conjunction with Bennie, Nimmo, Telford, and afterwards
with Walker and Cubitt, with all of whom he ever maintained a friendly
intercourse. Soon after the peace in 1815 the public mind was naturally
directed to the improvement of our internal resources, which the long
continuance of the Continental war had thrown unduly into the shade.
Roads, bridges, harbours, canals, and railways, soon became topics of
public attention and general interest; and my father's known sagacity
and energy rendered him a useful adviser on many of those subjects. In
the course of his professional life he designed and executed several
important bridges, such as those of Stirling, Marykirk, Annan, and the
Hutcheson Bridge over the Clyde at Glasgow^. Of the latter. Mr Fenwick,
of the Royal Military Academy, Woolwich, in the preface to his work on
the Mechanics
of Construction, published
in 1861, says:—"The London and Waterloo bridges in the metropolis, which
rank among tho finest structures of the elliptical
arch, and
Stevenson's Hutcheson Bridge at Glasgow, which is one of the best
specimens of the segmental
arch,
together with many others, have supplied me with a variety of problems
for illustration." In 1826 he gave a design to the corporation of
Newcastle for raising on the existing bridge another roadway, on a high
level, to communicate with the higher parts of the town ; being the very
idea since so successfully carried out by the late Mr Robert Stephenson
in his justly celebrated " high-level railway viaduct."
The beautiful approaches to the City of Edinburgh from the east, by the
Calton Hill, known as the London and Regent Roads, were designed by my
father, and executed under his direction; and 1 mention this the more
willingly, as it seems difficult to conceive anything finer than the
splendid entrance by the High School and Jail, to what Sir Walter Scott
has called "our own romantic town."'3 He
also surveyed and traced the lines of many canals and railways, which
have since been executed, more or less, in accordance with the advice
contained in his numerous printed reports. We may especially mention his
projected canal, and afterwards railway, on
one level, between
Edinburgh and Glasgow; his great Strathmore Canal and Railway, on one
level, which would have connected the towns of Perth, Forfar, Arbroath,
Montrose, and Brechiu, and his railway from Stockton to Darlington. In
1818 the Highland Society of Scotland offered a premium of fifty guineas
for the best essay on the construction of railroads. Many competing
treatises were given in, and the Society placed the whole of them in the
hands of my father for his opinion and report on their merits, "together
with such remarks of his own as he might judge useful.'" The result of
his examination is given at great length in the Transactions of the
Society,4 accompanied
by "notes," in which he makes several valuable suggestions. Before the
period alluded to, the rails in use had been almost invariably made of
cast-iron or timber; but my father, in his notes, says,—"I have no
hesitation in giving a decided preference to malleable iron, formed into
bars from twelve to twenty feet in length, with flat sides and parallel
edges, or in
the simple state in which they come from the rolling mills of the
manifacturer." He
also recommends that they should be fixed into guides or chairs of iron,
supported on props placed at distances in no case exceeding three feet,
and that they should he connected with a clamp-joint, so as to preserve
the whole strength of the material. It is not a little singular that
this description, given about forty years ago, may, to use engineering
phraseology, be not inaptly called a "specification of the permanent
way" of our best railways at the present day. The following letter,
written in 1821, shows the value which Mr George Stephenson, who has
been justly styled the pioneer of railway engineers, attached to my
father's suggestions, while it is, at the same time, interesting, as
showing the very moderate estimate which the great railway engineer then
cutertained of the performance of the locomotive engine—a machine which
was destined afterwards in his hands to become so important in changing
the inland communication of the whole civilised world :—
Killingworth Colliery, June 28,
1821.
R obERt
Stevenson, Esq.
Sir.—With
this you will receive 3 copies
of a specification of a patent malleable-iron rail invented by John
Kirkinshaw of Bedlington, near Morpeth. The hints were got from your
Report on Railways, which you were so kind as to send me by favour of Mr
Cookson some, time ago. Your reference to Tindale-fell Railway led the
inventor to make some experiments on malleable-iron bars, the result of
which convinced him of the superiority of the malleable over the cast
iron—so much so, that he took out a patent. Those rails are so much
liked in this neighbourhood, that I think in a short time they w ill do
away the cast-iron railways. They make a fine line for our engines, as
there are so few-joints compared with the other. I have lately started a
new locomotive engine, with come improvements on the others which you
saw: it Las far surpassed my expectations. I am confident a railway on
which my engines can work is far superior to a canal. On
a long and favourable, railway I would stent my engines to travel 00
miles per day with from 40 to 80 tons of goods. They would work nearly
fourfold cheaper than horses where coals are not very costly. I merely
make these observations, as I know you have been at more trouble than
any man I know of in searching into the utility of railways; and I
return you my sincere thanks for your favour by Mr Cookson.
If you should be in this neighbourhood, I hope you would
not pass Killingworth Colliery, as I should be extremely glad if you
could spend a day or two with me.—I am, sir, yours most respectfully,
(Signed) G. Stephenson.
In the same notes my father also suggests a new form of stone tracks
used for easing the draught on common roads. Specimens of it were laid
down under his direction on the South Bridge and Pleasance, and a sample
of it may he seen at Liberton hill, near Edinburgh. Within the last few
years it has been proposed to lay such stone tracks on several of the
turnpike roads throughout the country.
In 1825 he proposed a form of suspension bridge, applicable to small
spans, in which the roadway passes above the
chains, and the necessity for tall piers is avoided. The Suspension
Bridge, over the Ilhone at Geneva, and other bridges, have been
constructed on this principle. For timber bridges he also proposed a new
form of arch of a beautiful and simple construction, in which what might
be called the ring-courses of the arch are formed of layers of thin
planks bent into the circular form and stiffened by king-pod
pieces, on
which the level roadway rests. This form of bridge has since come into
very general use on railways. His proposal to adopt the cycloidal curve
for the vertical profiles of seawalls, which he carried into execution
at Trinity, near Edinburgh, and his design for securing constant
motion, by
causing the hydrostatic pressure of the varying level of the tide to
toll a bell, as a warning signal for the Carr Rock Beacon, are further
instances of the inventive turn of his mind.
There is scarcely a harbour or a navigation in Scotland about which at
some time he did not give valuable advice; and he was also often
consulted in England and Ireland—on the Severn, Mersey, Dee, Wear, Tees,
Erne, and other rivers and harbours. His published reports and
contributions to engineering knowledge extend, when collected, to four
thick quarto volumes ; and during his long life of industry he did much
which, like a large portion of the labours of all professional men, was
never known beyond the sphere immediately affected by it.
In addition to his professional exertions, he took an active part in
advancing the interests of science in so far as lay in his power, and
was one of the original promoters of the Astronomical Institution, out
of which has grown the present establishment of the Royal Observatory.
In 1815 he became a Fellow of the Royal Society of Edinburgh; and he
afterwards joined the Geological Society of London, and the Wernerian
and Antiquarian Societies of Scotland. In 1816 he published his memoir
on the alveus or bed of the German Ocean, in which he showed, by an
appeal to many evidences, that the sea was gradually encroaching on the
land, and that the sand-banks in the German Ocean are the result (if the
degradation of the adjoining shores. In this memoir, which has been
quoted by Lyell, Cuvier, and others, he estimates the sand-banks in the
German Ocean as equal to the cubic contents of a stratum of that sea
fourteen feet in thickness. In the year 1812, while engaged on the Pee
at Aberdeen, in making certain observations under a remit from the Court
of Session, he discovered the interesting fact, which has since become
so well known, that the salt water of the ocean flows lip the beds of
rivers in a stream quite distinct from the outflowing fresh water,
which, owing to its smaller specific gravity, floats on the surface. In
order to test the truth of his hypothesis, he had an instrument hastily
fitted up by an optician in Aberdeen, by which he found that while the
water on the surface was fresh, that raised from the bottom was
perfectly salt. This instrument, now termed a hydrophore, is often
employed in engineering and scientific inquiries for drawing specimens
of water from different depths in rivers and estuaries. He also made
several contributions to the Encyclopaedia
Britannica, to
the Edinburgh
Encyclopaedia, and
to various scientific journals of the day; and gave (in a series of
Letters which appeared in the
Scots Magazine in
1817, a lively and instructive account of a tour through the
Netherlands, in which he described some of the most interesting
engineering works connected with the drainage and embankment of Holland.
Sagacity, fortitude, and perseverance were very prominent points of Mr
Stevenson's character. In private life he was a man of sterling worth ;
and whether we regard him as a husband, a father, or a friend, he was
equally distinguished by the absence of selfishness and by his great
generosity. His exertions in forwarding the progress of young men
through life were extensive and unwearied ; and few men had more solid
grounds than he for indulging in the pleasing reflection that, both in
his public and private capacity, he had consecrated to beneficial ends
every talent committed to his trust. Many of his personal friends have
recorded the pleasant satisfaction with which they continued through
life to look back upon the days spent in Mr Stevenson's company on board
the lighthouse tender, on the occasion of his making his annual
inspection of the lighthouses. On one of those voyages made in 1814 he
was accompanied by Sir Walter Scott, who has given a graphic description
of it in his autobiography, from which I shall quote a single passage,
giving an amusing account of the first landing made by the Commissioners
on the rock on which the Skerryvore lighthouse has since been erected.
"Having crept upon deck about four in the morning," says
Sir Walter, "I find we are beating to windward off the Isle of Tyree,
with the determination, on the part of Mr Stevenson, that his
constituents should visit a reef of rocks called Skerry Vhor, where he
thought it would be essential to have a lighthouse. Loud remonstrances
on the part of the Commissioners, who, one and all, declare they will
subscribe to his opinion, whatever it may he, rather than continue the
infernal buffeting. Quiet perseverance on the part of Mr S., and great
kicking, bouncing, and squabbling upon that of the yacht, who seems to
like the idea of Skerry Vhor as little as the Commissioners. At length,
by dint of exertion, come in sight of this long ride of rocks (chiefly
under water), on which the tide breaks in a most tremendous style. There
appear a few low broad rocks at one end of the reef, which is about a
mile in length. These are never entirely under water, though the surf
dashes over them. To go through all the forms, Hamilton, Duff, and I
resolve to land upon these bare rocks in company with Mr Stevenson. Pull
through a very heavy swell with great difficulty, and approach a
tremendous surf dashing over black, pointed rocks. Our rowers, however,
get the boat into a quiet creek between two rocks, where we contrive to
land well wetted. I saw nothing remarkable in my way excepting several
seals, which we might have shot, but, in the doubtful circumstances of
the landing, we did not care to bring guns. We took possession of the
rock in name of the Commissioners, and generously bestowed our own great
names on its crags and creeks. The rock was carefully measured by Mr S.
It will be a most desolate position for a lighthouse, the Bell Rock and
Eddy stone a joke to it, for the nearest land is the wild island of
Tyree, at fourteen miles distance. So much for the Skerry Vhor."
On landing at the Bell Rock Lighthouse, the great poet inscribed in the
Album some lines which will be found in the vignette of the lighthouse
prefixed to this memoir.
My father was a man of sincere and unobtrusive piety; and although
warmly attached to the Established Church of Scotland, of which for
nearly forty years he had been an elder, he had no taint of bigotry or
of party feeling. A high sense of duty pervaded his whole life; and he
died calmly in that blessed hope and peace which only an indwelling and
personal belief in the merits of a Redeemer can impart to any son of our
guilty race.
At a Statutory General Meeting of the Board of Northern Lighthouses,
which was held on the 13th July 1850, the day after his death, the
Commissioners recorded their respect for his talents and virtues in the
following Minute :—
"The Secretary having intimated that Mr Robert Stevenson,
the late Engineer to the Board, died yesterday morning,
"The Board, before proceeding to business, desire to
record their regret at the death of this zealous, faithful, and able
officer, to whom is due the honour of conceiving and executing the great
work of the Bell
Rock
Lighthouse, whose services were gratefully acknowledged on his
retirement from active duty, and will be long remembered by the Board;
and to express their sympathy with his family on the loss of one who was
most estimable and exemplary in all the relations of social and domestic
life. The Board direct that a copy of this resolution be transmitted to
Mr Stevenson's family, and communicated to each Commissioner, to the
different light-keepers, and the other officers of the Board."
A. S,
August 8,
1861 |
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