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memories and portraits-第20章

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then to look forward to the grave; so far it seems now to look 

backward upon these emotions; so hard to recall justly that loath 

submission; as of the sacrificial bull; with which we stooped our 

necks under the yoke of destiny。  I met my old companion but the 

other day; I cannot tell of course what he was thinking; but; upon 

my part; I was wondering to see us both so much at home; and so 

composed and sedentary in the world; and how much we had gained; 

and how much we had lost; to attain to that composure; and which 

had been upon the whole our best estate: when we sat there prating 

sensibly like men of some experience; or when we shared our 

timorous and hopeful counsels in a western islet。









CHAPTER IX。 THOMAS STEVENSON … CIVIL ENGINEER





THE death of Thomas Stevenson will mean not very much to the 

general reader。  His service to mankind took on forms of which the 

public knows little and understands less。  He came seldom to 

London; and then only as a task; remaining always a stranger and a 

convinced provincial; putting up for years at the same hotel where 

his father had gone before him; faithful for long to the same 

restaurant; the same church; and the same theatre; chosen simply 

for propinquity; steadfastly refusing to dine out。  He had a circle 

of his own; indeed; at home; few men were more beloved in 

Edinburgh; where he breathed an air that pleased him; and wherever 

he went; in railway carriages or hotel smoking…rooms; his strange; 

humorous vein of talk; and his transparent honesty; raised him up 

friends and admirers。  But to the general public and the world of 

London; except about the parliamentary committee…rooms; he remained 

unknown。  All the time; his lights were in every part of the world; 

guiding the mariner; his firm were consulting engineers to the 

Indian; the New Zealand; and the Japanese Lighthouse Boards; so 

that Edinburgh was a world centre for that branch of applied 

science; in Germany; he had been called 〃the Nestor of lighthouse 

illumination〃; even in France; where his claims were long denied; 

he was at last; on the occasion of the late Exposition; recognised 

and medalled。  And to show by one instance the inverted nature of 

his reputation; comparatively small at home; yet filling the world; 

a friend of mine was this winter on a visit to the Spanish main; 

and was asked by a Peruvian if he 〃knew Mr。 Stevenson the author; 

because his works were much esteemed in Peru?〃  My friend supposed 

the reference was to the writer of tales; but the Peruvian had 

never heard of DR。 JEKYLL; what he had in his eye; what was 

esteemed in Peru; where the volumes of the engineer。



Thomas Stevenson was born at Edinburgh in the year 1818; the 

grandson of Thomas Smith; first engineer to the Board of Northern 

Lights; son of Robert Stevenson; brother of Alan and David; so that 

his nephew; David Alan Stevenson; joined with him at the time of 

his death in the engineership; is the sixth of the family who has 

held; successively or conjointly; that office。  The Bell Rock; his 

father's great triumph; was finished before he was born; but he 

served under his brother Alan in the building of Skerryvore; the 

noblest of all extant deep…sea lights; and; in conjunction with his 

brother David; he added two … the Chickens and Dhu Heartach … to 

that small number of man's extreme outposts in the ocean。  Of shore 

lights; the two brothers last named erected no fewer than twenty…

seven; of beacons; (4) about twenty…five。  Many harbours were 

successfully carried out: one; the harbour of Wick; the chief 

disaster of my father's life; was a failure; the sea proved too 

strong for man's arts; and after expedients hitherto unthought of; 

and on a scale hyper…cyclopean; the work must be deserted; and now 

stands a ruin in that bleak; God…forsaken bay; ten miles from John…

o'…Groat's。  In the improvement of rivers the brothers were 

likewise in a large way of practice over both England and Scotland; 

nor had any British engineer anything approaching their experience。



It was about this nucleus of his professional labours that all my 

father's scientific inquiries and inventions centred; these 

proceeded from; and acted back upon; his daily business。  Thus it 

was as a harbour engineer that he became interested in the 

propagation and reduction of waves; a difficult subject in regard 

to which he has left behind him much suggestive matter and some 

valuable approximate results。  Storms were his sworn adversaries; 

and it was through the study of storms that he approached that of 

meteorology at large。  Many who knew him not otherwise; knew … 

perhaps have in their gardens … his louvre…boarded screen for 

instruments。  But the great achievement of his life was; of course; 

in optics as applied to lighthouse illumination。  Fresnel had done 

much; Fresnel had settled the fixed light apparatus on a principle 

that still seems unimprovable; and when Thomas Stevenson stepped in 

and brought to a comparable perfection the revolving light; a not 

unnatural jealousy and much painful controversy rose in France。  It 

had its hour; and; as I have told already; even in France it has 

blown by。  Had it not; it would have mattered the less; since all 

through his life my father continued to justify his claim by fresh 

advances。  New apparatus for lights in new situations was 

continually being designed with the same unwearied search after 

perfection; the same nice ingenuity of means; and though the 

holophotal revolving light perhaps still remains his most elegant 

contrivance; it is difficult to give it the palm over the much 

later condensing system; with its thousand possible modifications。  

The number and the value of these improvements entitle their author 

to the name of one of mankind's benefactors。  In all parts of the 

world a safer landfall awaits the mariner。  Two things must be 

said: and; first; that Thomas Stevenson was no mathematician。  

Natural shrewdness; a sentiment of optical laws; and a great 

intensity of consideration led him to just conclusions; but to 

calculate the necessary formulae for the instruments he had 

conceived was often beyond him; and he must fall back on the help 

of others; notably on that of his cousin and lifelong intimate 

friend; EMERITUS Professor Swan; of St。 Andrews; and his later 

friend; Professor P。 G。 Tait。  It is a curious enough circumstance; 

and a great encouragement to others; that a man so ill equipped 

should have succeeded in one of the most abstract and arduous walks 

of applied science。  The second remark is one that applies to the 

whole family; and only particularly to Thomas Stevenson from the 

great number and importance of his inventions: holding as the 

Stevensons did a Government appointment they regarded their 

original work as something due already to the nation; and none of 

them has ever taken out a patent。  It is another caus
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