records of a family of engineers-第13节
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ll been words of flattery； but there was one thing that could not be affected； and that was the look and light that came into their faces at the name of Robert Stevenson。
In the early part of the century the foreman builder was a young man of the name of George Peebles； a native of Anstruther。 My grandfather had placed in him a very high degree of confidence； and he was already designated to be foreman at the Bell Rock； when； on Christmas…day 1806； on his way home from Orkney； he was lost in the schooner TRAVELLER。 The tale of the loss of the TRAVELLER is almost a replica of that of the ELIZABETH of Stromness； like the ELIZABETH she came as far as Kinnaird Head； was then surprised by a storm； driven back to Orkney； and bilged and sank on the island of Flotta。 It seems it was about the dusk of the day when the ship struck； and many of the crew and passengers were drowned。 About the same hour； my grandfather was in his office at the writing…table； and the room beginning to darken； he laid down his pen and fell asleep。 In a dream he saw the door open and George Peebles come in； ‘reeling to and fro； and staggering like a drunken man；' with water streaming from his head and body to the floor。 There it gathered into a wave which； sweeping forward； submerged my grandfather。 Well； no matter how deep； versions vary； and at last he awoke； and behold it was a dream！ But it may be conceived how profoundly the impression was written even on the mind of a man averse from such ideas； when the news came of the wreck on Flotta and the death of George。
George's vouchers and accounts had perished with himself； and it appeared he was in debt to the Commissioners。 But my grandfather wrote to Orkney twice； collected evidence of his disbursements； and proved him to be seventy pounds ahead。 With this sum； he applied to George's brothers； and had it apportioned between their mother and themselves。 He approached the Board and got an annuity of 5 pounds bestowed on the widow Peebles； and we find him writing her a long letter of explanation and advice； and pressing on her the duty of making a will。 That he should thus act executor was no singular instance。 But besides this we are able to assist at some of the stages of a rather touching experiment； no less than an attempt to secure Charles Peebles heir to George's favour。 He is despatched； under the character of ‘a fine young man'； recommended to gentlemen for ‘advice； as he's a stranger in your place； and indeed to this kind of charge； this being his first outset as Foreman'； and for a long while after； the letter…book； in the midst of that thrilling first year of the Bell Rock； is encumbered with pages of instruction and encouragement。 The nature of a bill； and the precautions that are to be observed about discounting it； are expounded at length and with clearness。 ‘You are not； I hope； neglecting； Charles； to work the harbour at spring…tides； and see that you pay the greatest attention to get the well so as to supply the keeper with water； for he is a very helpless fellow； and so unfond of hard work that I fear he could do ill to keep himself in water by going to the other side for it。' … ‘With regard to spirits； Charles； I see very little occasion for it。' These abrupt apostrophes sound to me like the voice of an awakened conscience； but they would seem to have reverberated in vain in the ears of Charles。 There was trouble in Pladda； his scene of operations； his men ran away from him； there was at least a talk of calling in the Sheriff。 ‘I fear；' writes my grandfather； ‘you have been too indulgent； and I am sorry to add that men do not answer to be too well treated； a circumstance which I have experienced； and which you will learn as you go on in business。' I wonder； was not Charles Peebles himself a case in point？ Either death； at least； or disappointment and discharge； must have ended his service in the Northern Lights； and in later correspondence I look in vain for any mention of his name … Charles； I mean； not Peebles： for as late as 1839 my grandfather is patiently writing to another of the family： ‘I am sorry you took the trouble of applying to me about your son； as it lies quite out of my way to forward his views in the line of his profession as a Draper。'
III
A professional life of Robert Stevenson has been already given to the world by his son David； and to that I would refer those interested in such matters。 But my own design； which is to represent the man； would be very ill carried out if I suffered myself or my reader to forget that he was； first of all and last of all； an engineer。 His chief claim to the style of a mechanical inventor is on account of the Jib or Balance Crane of the Bell Rock； which are beautiful contrivances。 But the great merit of this engineer was not in the field of engines。 He was above all things a projector of works in the face of nature； and a modifier of nature itself。 A road to be made； a tower to be built； a harbour to be constructed； a river to be trained and guided in its channel … these were the problems with which his mind was continually occupied； and for these and similar ends he travelled the world for more than half a century； like an artist； note…book in hand。
He once stood and looked on at the emptying of a certain oil…tube； he did so watch in hand； and accurately timed the operation； and in so doing offered the perfect type of his profession。 The fact acquired might never be of use： it was acquired： another link in the world's huge chain of processes was brought down to figures and placed at the service of the engineer。 ‘The very term mensuration sounds ENGINEER…LIKE；' I find him writing； and in truth what the engineer most properly deals with is that which can be measured； weighed； and numbered。 The time of any operation in hours and minutes； its cost in pounds； shillings； and pence； the strain upon a given point in foot…pounds … these are his conquests； with which he must continually furnish his mind； and which； after he has acquired them； he must continually apply and exercise。 They must be not only entries in note…books； to be hurriedly consulted； in the actor's phrase； he must be STALE in them； in a word of my grandfather's； they must be ‘fixed in the mind like the ten fingers and ten toes。'
These are the certainties of the engineer； so far he finds a solid footing and clear views。 But the province of formulas and constants is restricted。 Even the mechanical engineer comes at last to an end of his figures； and must stand up； a practical man； face to face with the discrepancies of nature and the hiatuses of theory。 After the machine is finished； and the steam turned on； the next is to drive it； and experience and an exquisite sympathy must teach him where a weight should be applied or a nut loosened。 With the civil engineer； more properly so called （if anything can be proper with this awkward coinage）； the obligation starts with the beginning。 He is always the practical man。 The rains； the winds and the waves； the complexity and the fitfulness of nature； are always before him。 He has to deal with the unpredictable； with those forces （in Smeaton's phrase） that ‘are subject to no calculation'； and still he must predict； still calculate them； at his peril。 His work is not yet in being； and he must foresee its influence： how it shall deflect the tide； exaggerate the waves； dam back the rain…water； or attract the thunderbolt。 He visits a piece of sea…board； and from the inclination and soil of the beach； from the weeds and shell…fish； from the configuration of the coast and the depth of soundings outside； he must deduce what magnitude of waves is to be looked for。 He visits a river； its summer water babbling on shallows； and he must not only read； in a thousand indications； the measure of winter freshets； but be able to predict the violence of occasional great floods。 Nay； and more； he must not only consider that which is； but that which may be。 Thus I find my grandfather writing； in a report on the North Esk Bridge： ‘A less waterway might have sufficed； but the VALLEYS MAY COME TO BE MELIORATED BY DRAINAGE。' One field drained after another through all that confluence of vales； and we come to a time when they shall precipitate by so much a more copious and transient flood； as the gush of the flowing drain…pipe is superior to the leakage of a peat。
It is plain there is here but a restricted use for formulas。 In this sort of practice； the engineer has need of some transcendental sense。 Smeaton； the pioneer； bade him obey his ‘feelings'； my father； that ‘power of estimating obscure forces which supplies a coefficient of its own to every rule。' The rules must be everywhere indeed； but they must everywhere be modified by this transcendental coefficient； everywhere bent to the impression of the trained eye and the FEELINGS of the engineer。 A sentiment of physical laws and of the scale of nature； which shall have been strong in the beginning and progressively fortified by observation； must be his guide in the last recourse。 I had the most opportunity to observe my father。 He would pass hours on the beach； brooding over the waves； counting them； noting their least deflection； noting when they broke。 O
