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ted； unessayed； and even now； after it has been lighted for more than eighty years； it is still an exploit that has never been repeated。 （1） My grandfather was； besides； but a young man； of an experience comparatively restricted； and a reputation confined to Scotland； and when he prepared his first models； and exhibited them in Merchants' Hall； he can hardly be acquitted of audacity。 John Clerk of Eldin stood his friend from the beginning； kept the key of the model room； to which he carried ‘eminent strangers；' and found words of counsel and encouragement beyond price。 ‘Mr。 Clerk had been personally known to Smeaton； and used occasionally to speak of him to me；' says my grandfather； and again： ‘I felt regret that I had not 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。 〃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。〃 '
（1） The particular event which concentrated Mr。 Stevenson's attention on the problem of the Bell Rock was the memorable gale of December 1799； when； among many other vessels； H。M。S。 YORK； a seventy…four…gun ship； went down with all hands on board。 Shortly after this disaster Mr。 Stevenson made a careful survey； and prepared his models for a stone tower； the idea of which was at first received with pretty general scepticism； Smeaton's Eddystone tower could not be cited as affording a parallel； for there the rock is not submerged even at high…water； while the problem of the Bell Rock was to build a tower of masonry on a sunken reef far distant from land； covered at every tide to a depth of twelve feet or more； and having thirty…two fathoms' depth of water within a mile of its eastern edge。
A Bill for the work was introduced into Parliament and lost in the Lords in 1802…3。 John Rennie was afterwards； at my grandfather's suggestion； called in council； with the style of chief engineer。 The precise meaning attached to these words by any of the parties appears irrecoverable。 Chief engineer should have full authority； full responsibility； and a proper share of the emoluments； and there were none of these for Rennie。 I find in an appendix a paper which resumes the controversy on this subject； and it will be enough to say here that Rennie did not design the Bell Rock； that he did not execute it； and that he was not paid for it。 （1） From so much of the correspondence as has come down to me； the acquaintance of this man； eleven years his senior； and already famous； appears to have been both useful and agreeable to Robert Stevenson。 It is amusing to find my grandfather seeking high and low for a brace of pistols which his colleague had lost by the way between Aberdeen and Edinburgh； and writing to Messrs。 Dollond； ‘I have not thought it necessary to trouble Mr。 Rennie with this order； but I BEG YOU WILL SEE TO GET TWO MINUTES OF HIM AS HE PASSES YOUR DOOR' … a proposal calculated rather from the latitude of Edinburgh than from London； even in 1807。 It is pretty； too； to observe with what affectionate regard Smeaton was held in mind by his immediate successors。 ‘Poor old fellow；' writes Rennie to Stevenson； ‘I hope he will now and then take a peep at us； and inspire you with fortitude and courage to brave all difficulties and dangers to accomplish a work which will； if successful； immortalise you in the annals of fame。' The style might be bettered； but the sentiment is charming。
（1） The grounds for the rejection of the Bill by the House of Lords in 1802…3 had been that the extent of coast over which dues were proposed to be levied would be too great。 Before going to Parliament again； the Board of Northern Lights； desiring to obtain support and corroboration for Mr。 Stevenson's views； consulted first Telford； who was unable to give the matter his attention； and then （on Stevenson's suggestion） Rennie； who concurred in affirming the practicability of a stone tower； and supported the Bill when it came again before Parliament in 1806。 Rennie was afterwards appointed by the Commissioners as advising engineer； whom Stevenson might consult in cases of emergency。 It seems certain that the title of chief engineer had in this instance no more meaning than the above。 Rennie； in point of fact； proposed certain modifications in Stevenson's plans； which the latter did not accept； nevertheless Rennie continued to take a kindly interest in the work； and the two engineers remained in friendly correspondence during its progress。 The official view taken by the Board as to the quarter in which lay both the merit and the responsibility of the work may be gathered from a minute of the Commissioners at their first meeting held after Stevenson died； in which they record their regret ‘at the death of this zealous； faithful； and able officer； TO WHOM IS DUE THE HONOUR OF CONCEIVING AND EXECUTING THE BELL ROCK LIGHTHOUSE。' The matter is briefly summed up in the LIFE of Robert Stevenson by his son David Stevenson （A。 & C。 Black； 1878）； and fully discussed； on the basis of official facts and figures； by the same writer in a letter to the CIVIL ENGINEERS' AND ARCHITECTS' JOURNAL； 1862。
Smeaton was； indeed； the patron saint of the Bell Rock。 Undeterred by the sinister fate of Winstanley； he had tackled and solved the problem of the Eddystone； but his solution had not been in all respects perfect。 It remained for my grand… father to outdo him in daring； by applying to a tidal rock those principles which had been already justified by the success of the Eddystone； and to perfect the model by more than one exemplary departure。 Smeaton had adopted in his floors the principle of the arch； each therefore exercised an outward thrust upon the walls； which must be met and combated by embedded chains。 My grandfather's flooring…stones； on the other hand； were flat； made part of the outer wall； and were keyed and dovetailed into a central stone； so as to bind the work together and be positive elements of strength。 In 1703 Winstanley still thought it possible to erect his strange pagoda； with its open gallery； its florid scrolls and candlesticks： like a rich man's folly for an ornamental water in a park。 Smeaton followed； then Stevenson in his turn corrected such flaws as were left in Smeaton's design； and with his improvements； it is not too much to say the model was made perfect。 Smeaton and Stevenson had between them evolved and finished the sea…tower。 No subsequent builder has departed in anything essential from the principles of their design。 It remains； and it seems to us as though it must remain for ever； an ideal attained。 Every stone in the building； it may interest the reader to know； my grandfather had himself cut out in the model； and the manner in which the courses were fitted； joggled； trenailed； wedged； and the bond broken； is intricate as a puzzle and beautiful by ingenuity。
In 1806 a second Bill passed both Houses； and the preliminary works were at once begun。 The same year the Navy had taken a great harvest of prizes in the North Sea； o