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Triumphs of Invention and Discovery in Art and Science
Such was the fate of the second lighthouse on the Eddystone, – one element revenging, as it were, the conquest over another.
In spite of the fatality which seemed to attend these lighthouses, the lessees of the Eddystone – for it was then in private hands, and did not come into the hands of the Trinity House till many years after – resolved to make another attempt; and this time they selected as the architect one of the ablest professional men of the day, and with sagacious liberality, adopted his advice to build it of stone and granite.
Smeaton truly belonged to the class of heaven-born engineers. From his earliest years the bent of his genius unmistakably revealed itself. Before he was six years old, he one day terrified his parents by climbing to the top of a barn to fix up some contrivance he had put together, after the fashion of a windmill; and another time he constructed a pump that raised water, after watching some workmen sinking one. And as he grew older, his efforts took a more ambitious range, and were all equally remarkable for their originality and success. His father destined him for the bar; but his inclination for engineering was so irresistible, that he allowed him to resign all chance of the woolsack, and set up in business as a mathematical instrument maker. He gradually advanced to the profession of civil engineering, – which he was the first man in England to pursue, and which he may be said to have created.
It was in 1756 he commenced the construction of the great work which may be regarded as the monument of his fame. Having decided that his lighthouse should be of stone, the next point to be settled was its form. His thoughts, he tells us in his book, instinctively reverted to the analogy between a lighthouse shaft and the trunk of a stately oak. He remarked the spreading roots taking a broad, firm grip of the soil, the rise of the swelling base, gradually lessening in girth in a graceful curve, till a preparation being required for the support of the spreading boughs, a renewed swelling of diameter takes place; and he held that cutting off the branches we have, in the trunk of an oak, a type of such a lighthouse column as is best adapted to resist the influence of the winds and waves. Whether or not Smeaton arrived at the form of his lighthouse, which has since become the model for all others, from this fanciful analogy, its appearance rising from the rock presents a strong resemblance to a noble tree stripped of its boughs and foliage.
Smeaton commenced the undertaking by visiting the rock in the spring of 1756, accurately measuring its very irregular surface, and in order to ensure exactness in his plans, making a model of it. In the summer of the same year he prepared the foundation by cutting the surface of the rock in regular steps or trenches, into which the blocks of stone were to be dovetailed. The first stone was laid in June 1757, and the last in August 1759. Of that period there were only 431 days when it was possible to stand on the rock, and so small a portion even of these was available for carrying on the work, that it is calculated the building in reality occupied but six weeks. The whole was completed without the slightest accident to any one; and so well were all the arrangements made, that not a minute was lost by confusion or delay amongst the workmen.
The tower measures 86 feet in height, and 26 feet in diameter at the level of the first entire course, the diameter under the cornice being only 15 feet. The first twelve feet of the structure form a solid mass of masonry, – the blocks of stone being held together by means of stone joggles, dovetailed joints, and oaken tree-nails. All the floors of the edifice are arched; to counteract the possible outburst of which, Smeaton bound the courses of his stone work together by belts of iron chain, which, being set in grooves while in a heated state, by the application of hot lead, on cooling, of course, tightened their clasp on the tower. Throughout the whole work the greatest ingenuity is displayed in obtaining the greatest amount of resistance, and combining the two great principles of strength and weight, – technically speaking, cohesion and inertia.
On the 16th October 1759, the warning light once more, after an interval of four years, shone forth over the troubled waters from the dangerous rock; but it was but a feeble illumination at the best, for it came from only a group of tallow candles. It was better than nothing, certainly; but the exhibition of a few glimmering candles was but a paltry conclusion to so stupendous an undertaking. For many years, however, no stronger light gleamed from the tower, till, in 1807, when it passed from the hands of private proprietors into the charge of the Trinity House, the mutton dips were supplanted by Argand burners, with silvered copper reflectors.
Imperfect, however, as used to be the lighting apparatus, the Eddystone Beacon has always been a great boon to all those "that go down to the sea in great ships," and has robbed these perilous waters of much of their terror. We can readily sympathize with the exultation of the great engineer who reared it, when standing on the Hoe at Plymouth, he spent many an hour, with his telescope, watching the great swollen waves, in powerless fury, dash against his tower, and "fly up in a white column, enwrapping it like a sheet, rising at the least to double the height of the tower, and totally intercepting it from sight." It is now more than a hundred years since Smeaton's Lighthouse first rose upon the Eddystone; but, in spite of the many furious storms which have put its stability to rude and searching proof, it still lifts its head proudly over the waves, and shows no signs of failing strength.
II. – THE BELL ROCK
The Inch Cape, or Bell Rock, is a long, narrow reef on the east coast of Scotland, at the mouth of the Frith of Tay, and some dozen of miles from the nearest land. At high water the whole ledge is buried out of sight; and even at the ebb the highest part of it is only three or four feet out of the water. In the days of old, as the tradition goes, one of the abbots of Arbroath, among many good works, exhibited his piety and humanity by placing upon a float attached to the perilous reef a large bell, so suspended as to be tolled by the rising and falling of the waves.
"On a buoy, in the storm it floated and swung,And over the waves its warning rung."Many a storm-tossed mariner heard the friendly knell that warned him of the nearness of the fatal rock, and changed his course before it was too late, with blessings on the good old monk who had hung up the bell; but after some years, one of the pirates who infested the coast cut it down in wanton cruelty, and was one of the first who suffered from the loss. Not long after, he perished upon this very rock, which a dense fog shrouded from sight, and no bell gave timely warning of.
"And even in his dying fear,One dreadful sound did the rover hear;A sound as if with the Inch Cape Bell,The devil below was ringing his knell."After the lapse of many years, two attempts were made to raise a beacon of spars upon the rock; but one after the other they fell a prey to the angry waves, and were hardly set up before they disappeared. It was not till the beginning of the century that the Commissioners of Northern Lighthouses took up the idea of erecting a lighthouse on this reef, the most dangerous on all the coast. Several years elapsed before they got the sanction of Parliament to the undertaking, and 1807 arrived before it was actually entered upon.
Mr. Robert Stevenson, to whom the work was intrusted as engineer, had from a very early age been employed in connection with lighthouses. He went almost directly from school to the office of Mr. Thomas Smith of Edinburgh, and when that gentleman was appointed engineer to the Northern Lighthouse Commissioners, became his assistant, and afterwards successor. When only nineteen, Mr. Stevenson superintended the construction of the lighthouse on the island of Little Cumbray; and during the time he was engineer to the Commissioners, which post he held till 1842, he erected no fewer than forty-two lighthouses, and introduced a great many valuable improvements into the system. His reputation, however, will be chiefly perpetuated as the architect of the Bell Rock Lighthouse.
On the 17th August 1807, Mr. Stevenson and his men landed on the rock, to the astonishment and discomposure of the seals who had, from time immemorial, been in undisturbed possession of it, and now floundered off into the water on the approach of the usurpers. The workmen at once set about preparing the rock for the erection of a temporary pyramid on which a barrack-house was to be placed for the reception of the workmen. They could only work on the rock for a few hours at spring-tide. As soon as the flood-tide began to rise around them, putting out the fire of the smith's forge, and gradually covering the rock, they had to gather up their tools and retreat to a floating barrack moored at a considerable distance, in order to reach which they had to row in small boats to the tender, by which they were then conveyed to their quarters. The operations of this first season were particularly trying to the men, on account of their having to row backwards and forwards between the rock and the tender at every tide, which in rough weather was a very heavy pull, and having often after that to work on the rock knee deep in water, only quitting it for the boats when absolutely compelled by the swelling waves. Sometimes the sea would be so fierce for days together that no boat could live in it, and the men had, therefore, to remain cooped up wearily on board the floating barrack.
One day in September, when the engineer and thirty-one men were on the rock, the tender broke from its moorings, and began to drift away from the rock, just as the tide was rising. Mr. Stevenson, perched on an eminence above the rest, surveying them at their labours, was the first, and for a while, the men being all intent on their work, the only one, who observed what had happened. He said nothing, but went to the highest point of the rock, and kept an anxious watch on the progress of the vessel and the rising of the sea. First the men on the lower tier of the works, then by degrees those above them, struck work on the approach of the water. They gathered up their tools and made towards the spot where the boats were moored, to get their jackets and stockings and prepare for quitting the rock. What their feelings were when they found only a couple of boats there, and the tender drifting off with the other in tow, may be conceived. All the peril of their situation must have flashed across their minds as they looked across the raging sea, and saw the distance between the tender and the rock increasing every moment, while all around them the water rose higher and higher. In another hour, the waves would be rolling twelve feet and more above the crag on which they stood, and all hope of the tender being able to work round to them was being quickly dissipated. They watched the fleeting vessel and the rising tide, and their hearts sank within them, but not a word was uttered. They stood silently counting their numbers and calculating the capacity of the boats; and then they turned their eyes upon their trusted leader, as if their last hope lay in his counsel. Stevenson never forgot the appalling solemnity of the moment. One chance, and but a slender one, of escape alone occurred to him. It was that, stripping themselves of their clothes, and divesting the two boats, as much as possible, of everything that weighted and encumbered them, so many men should take their seats in the boats, while the others hung on by the gunwales; and that they should then work their way, as best they could, towards either the tender or the floating barrack. Stevenson was about to explain this to his men, but found that all power of speech had left him. The anxiety of that dreadful moment had parched his throat, and his tongue clave to the roof of his mouth. He stooped to one of the little pools at his feet to moisten his fevered lips with the salt water. Suddenly a shout was raised, "A boat! A boat!" and through the haze a large pilot boat could dimly be discerned making towards the rock. The pilot had observed the Smeaton drifting off, and, guessing at once the critical position of the workmen on the rock, had hastened to their relief.
Next morning when the bell sounded on board the barrack for the return to the rock, only eight out of the twenty-six workmen, beside the foreman and seamen, made their appearance on deck to accompany their leader. Mr. Stevenson saw it would be useless to argue with them then. So he made no remark, and proceeded with the eight willing workmen to the rock, where they spent four hours at work. On returning to the barrack, the eighteen men who had remained on board appeared quite ashamed of their cowardice; and without a word being said to them, were the first to take their places in the boats when the bell rang again in the afternoon.
At length the barrack was completed, and the men were then relieved from the toil of rowing backwards and forwards between the tender and the rock, as well as from the constant sickness which tormented them on board the floating barrack. They were now able to prolong their labours, when the tide permitted, into the night. At such times the rock assumed a singularly picturesque and romantic aspect – its surface crowded with men in all variety of attitudes, the two forges and numerous torches lighting up the scene, and throwing a lurid gleam across the waters, and the loud dong of the anvils mingling with the dashing of the breakers.
On the 18th July 1808, the site having been properly excavated, the first stone of the lighthouse was laid by the Duke of Argyle; and by the end of the second season some five or six feet of building had been erected, and were left to the mercy of the waves till the ensuing spring. The third season's operations raised the masonry to a height of thirty feet above the sea, and the fourth season saw the completion of the tower. On the first night in February of the succeeding year (1811) the lamp was lit, and beamed forth across the waters.
The Bell Rock Tower is 100 feet in height, 42 feet in diameter at the base, and 15 feet at the top. The door is 30 feet from the base, and the ascent is by a massive bronze ladder. The "light" is revolving, and presents a white and red light alternately, by means of shades of red glass arranged in a frame. The machinery which causes the revolution of the lamp is also applied to the tolling of two large bells, in order to give warning to the mariner of his approach to the rock in foggy weather, thus reviving the traditional practice from which the rock takes its name.
III. – THE SKERRYVORE
"Having crept upon deck about four in the morning, 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 be, rather than continue this dreadful buffeting. Quiet perseverance on the part of Mr. Stevenson, 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, came in sight of this long range 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. We took possession of it in the name of the commissioners, and generously bestowed our own great names on its crags and creeks. The rock was carefully measured by Mr. Stevenson. It will be a most desolate position for a lighthouse – the Bell Rock and Eddystone a joke to it, for the nearest land is the wild island of Tyree, at 14 miles distance."
Such is an entry in the diary of Sir Walter Scott's Yacht Tour, on the 27th August 1814; but although the necessity of a lighthouse on the Skerry Vhor, or, as it is now generally called, Skerryvore, was fully acknowledged by the authorities, it was not till twenty-four years afterwards that the undertaking was actually commenced, under the superintendence of Mr. Alan Stevenson, the son of the eminent engineer who erected the Bell Rock Lighthouse.
In the execution of this great work, if the son had, as compared with his father, certain advantages in his favour, he had also various disadvantages to contend with at Skerryvore from which the engineer of the Bell Rock was free. Mr. Alan Stevenson had steam power at his command, and the benefit of all the experience derived from the experiments of his predecessors in similar operations; but at the same time, the rock on which he had to work was at a greater distance from the land, and separated from it by a more dangerous passage than that of either the Bell or the Eddystone; and the geological formation of which the rock is composed, was much more difficult to work upon. The Skerryvore is distant from Tyree, the nearest inhabited island, about 11 miles; even in fine weather the intervening passage is a trying one, and in rough weather no ship can live in such a sea, studded as it is with treacherous rocks. The sandstone of the Bell Rock is worn into rugged inequalities, which favoured the operations of the engineer; but the action of the waves on the igneous formation of the Skerryvore has given it all the smoothness and slippery polish of a mass of dark coloured glass. Indeed, the foreman of the masons, on first visiting the rock, not unjustly compared the operation of ascending it to that of "climbing up the neck of a bottle."
The 7th August 1838 was the first day of entire work on the rock, and with succeeding ones was spent in the erection of a temporary barrack of wood, for the men to lodge in on the rock. It was completed before the season closed; but one of the first heavy gales in November wrenched it from its holdings, and swept it into the sea, leaving nothing to mark the site but a few broken and twisted stanchions, attached to one of which was a portion of a great beam which had been shaken and rent, by dashing against the rocks, into a bundle of ribands. Thus in one night were obliterated the results of a whole season's toil, and with them, the hopes the men cherished of having a dwelling on the rock, instead of on board the brig, where they suffered intensely from the miseries of constant sickness.
The excavation of the foundations occupied the whole of the summer season of 1839, from the 6th May to the 3d September. The hard, nitrified rock held out stoutly against the assaults of both iron and gunpowder; and much time was spent in hollowing out the basin in which the lighthouse was to be fixed. From the limited extent of the rock and the absence of any place of shelter, the blasting was an operation of considerable danger, as the men had no place to run to, and it had to be managed with great caution. Only a small portion of the rock could be blown up at a time, and care had to be taken to cover the part over with mats and nettings made of old rope to check the flight of the stones. The excavation of the flinty mass occupied nearly two summers.
The operations of 1840 included, much to the delight of the workmen, the reconstruction of the barrack, to which they were glad to remove from the tossing vessel. The second edifice was more substantial than the first, and proved more enduring. Rude and narrow as it was, it offered, after the discomforts of the vessel, almost a luxurious lodging to its hardy inmates.
"Packed 40 feet above the weather-beaten rock, in this singular abode," writes the engineer, Mr. Alan Stevenson, "with a goodly company of thirty men, I have spent many a weary day and night, at those times when the sea prevented any one going down to the rock, anxiously looking for supplies from the shore, and earnestly longing for a change of weather favourable to the recommencement of the works. For miles around nothing could be seen but white foaming breakers, and nothing heard but howling winds and lashing waves. Our slumbers, too, were at times fearfully interrupted by the sudden pouring of the sea over the roof, the rocking of the house on its pillars, and the spurting of water through the seams of the doors and windows; symptoms which, to one suddenly aroused from sound sleep, recalled the appalling fate of the former barrack, which had been engulphed in the foam not twenty yards from our dwelling, and for a moment seemed to summon us to a similar fate. On two occasions in particular, these sensations were so vivid as to cause almost every one to spring out of bed; and some of the men fled from the barrack by a temporary gangway to the more stable, but less comfortable shelter afforded by the bare walls of the lighthouse tower, then unfinished, where they spent the remainder of the night in the darkness and the cold."
In spite of their anxiety to get on with the work, and their intrepidity in availing themselves of every opportunity, these gallant men were often forced by stress of weather into an inactivity which we may be sure they felt sadly irksome and against the grain. "At such seasons," says Mr. Stevenson, "much of our time was spent in bed, for there alone we had effectual shelter from the winds and the spray which reached every cranny in the walls of our barrack." On one occasion they were for fourteen days without communication with the shore, and when at length the seas subsided, and they were able to make the signal to Tyree that a landing at the rock was practicable, scarcely twenty-four hours' stock of provisions remained on the rock. In spite of hardships and perils, however, the engineer declares that "life on the Skerryvore Rock was by no means destitute of its peculiar pleasures. The grandeur of the ocean's rage – the deep murmur of the waves – the hoarse cry of the sea birds, which wheeled continually over us, especially at our meals – the low moaning of the wind – or the gorgeous brightness of a glossy sea and a cloudless sky – and the solemn stillness of a deep blue vault, studded with stars, or cheered by the splendours of the full moon, – were the phases of external things that often arrested our thoughts in a situation where, with all the bustle that sometimes prevailed, there was necessarily so much time for reflection. Those changes, together with the continual succession of hopes and fears connected with the important work in which we were engaged, and the oft recurring calls for advice or direction, as well as occasional hours devoted to reading and correspondence, and the pleasures of news from home, were more than sufficient to reconcile me to – nay, to make me really enjoy – an uninterrupted residence, on one occasion, of not less than five weeks on that desert rock."
The Skerryvore Lighthouse was at length successfully completed. The height of the tower is 138 feet 6 inches, of which the first 26 feet is solid. It contains a mass of stone work of more than double the quantity of the Bell Rock, and nearly five times that of the Eddystone. The entire cost, including steam tug and the building of a small harbour at Hynish for the reception of the little vessel that now attends the lighthouse, was £86,977. The light is revolving, and reaches its brightest state once every minute. It is produced by the revolution of eight great annular lenses around a central light, with four wicks, and can be seen from the deck of a vessel at the distance of 18 miles. Mr. Alan Stevenson sums up his deeply interesting narrative in the following words: "In such a situation as the Skerryvore, innumerable delays and disappointments were to be expected by those engaged in the work; and the entire loss of the fruit of the first season's labour in the course of a few hours, was a good lesson in the school of patience, and of trust in something better than an arm of flesh. During our progress, also, cranes and other materials were swept away by the waves; vessels were driven by sudden gales to seek shelter at a distance from the rocky shores of Mull and Tyree; and the workmen were left on the rock desponding and idle, and destitute of many of the comforts with which a more roomy and sheltered dwelling, in the neighbourhood of friends, is generally connected. Daily risks were run in landing on the rock in a heavy surf, in blasting the splintery gneiss, or by the falling of heavy bodies from the tower on a narrow space below, to which so many persons were necessarily confined. Yet had we not any loss of either life or limb; and although our labours were prolonged from dawn to night, and our provisions were chiefly salt, the health of the people, with the exception of a few slight cases of dysentery, was generally good throughout the six successive summers of our sojourn on the rock. The close of the work was welcomed with thankfulness by all engaged in it; and our remarkable preservation was viewed, even by many of the most thoughtless, as, in a peculiar manner, the gracious work of Him by whom the very hairs of our heads are all numbered!"