贝壳电子书 > 英文原著电子书 > the life of thomas telford >

第60章

the life of thomas telford-第60章

小说: the life of thomas telford 字数: 每页4000字

按键盘上方向键 ← 或 → 可快速上下翻页,按键盘上的 Enter 键可回到本书目录页,按键盘上方向键 ↑ 可回到本页顶部!
————未阅读完?加入书签已便下次继续阅读!




Cysylltau works; where he had acquired a taste for English comforts;

and returned to the North with a considerable contempt for the

Highland people amongst whom he was stationed。  He is said to

have very much resembled Dr。 Johnson in person and was so fond

of books; and so well read in them; that he was called

'the Walking Library。' He used to say that if justice were done to

the inhabitants of Inverness; there would be nobody left there in

twenty years but the Provost and the hangman。  Seeing an artist one

day making a sketch in the mountains; he said it was the first time

he had known what the hills were good for。  And when some one was

complaining of the weather in the Highlands; he looked sarcastically

round; and observed that the rain certainly would not hurt the

heather crop。



*'2' The misfortunes of the Caledonian Canal did not end with the

life of Telford。  The first vessel passed through it from sea to

sea in October; 1822; by which time it had cost about a million

sterling; or double the original estimate。  Notwithstanding this

large outlay; it appears that the canal was opened before the works

had been properly completed; and the consequence was that they very

shortly fell into decay。  It even began to be considered whether

the canal ought not to be abandoned。  In 1838; Mr。 James Walker;

C。E。; an engineer of the highest eminence; examined it; and

reported fully on its then state; strongly recommending its

completion as well as its improvement。  His advice was eventually

adopted; and the canal was finished accordingly; at an additional

cost of about 200;000L。; and the whole line was re…opened in 1847;

since which time it has continued in useful operation。  The passage

from sea to sea at all times can now be depended on; and it can

usually be made in forty…eight hours。  As the trade of the North

increases; the uses of the canal will probably become much more

decided than they have heretofore; proved。



*'3' 'Brindley and the Early Engineers;' p。 267。



*'4' 'Life of Telford;' p。 82; 83。





CHAPTER XI。



TELFORD AS A ROAD…MAKER。



Mr。 Telford's extensive practice as a bridge…builder led his friend

Southey to designate him 〃Pontifex Maximus。〃  Besides the numerous

bridges erected by him in the West of England; we have found him

furnishing designs for about twelve hundred in the Highlands; of

various dimensions; some of stone and others of iron。  His practice

in bridge…building had; therefore; been of an unusually extensive

character; and Southey's sobriquet was not ill applied。  But besides

being a great bridge…builder; Telford was also a great road…maker。

With the progress of industry and trade; the easy and rapid transit

of persons and goods had come to be regarded as an increasing

object of public interest。  Fast coaches now ran regularly between

all the principal towns of England; every effort being made;

by straightening and shortening the roads; cutting down hills;

and carrying embankments across valleys and viaducts over rivers;

to render travelling by the main routes as easy and expeditious as

possible。



Attention was especially turned to the improvement of the longer

routes; and to perfecting the connection of London with the chief

town's of Scotland and Ireland。  Telford was early called upon to

advise as to the repairs of the road between Carlisle and Glasgow;

which had been allowed to fall into a wretched state; as well as

the formation of a new line from Carlisle; across the counties of

Dumfries; Kirkcudbright; and Wigton; to Port Patrick; for the

purpose of ensuring a more rapid communication with Belfast and the

northern parts of Ireland。  Although Glasgow had become a place of

considerable wealth and importance; the roads to it; north of

Carlisle; continued in a very unsatisfactory state。  It was only in

July; 1788; that the first mail…coach from London had driven into

Glasgow by that route; when it was welcomed by a procession of the

citizens on horseback; who went out several miles to meet it。

But the road had been shockingly made; and before long had become

almost impassable。  Robert Owen states that; in 1795; it took him

two days and three nights' incessant travelling to get from

Manchester to Glasgow; and he mentions that the coach had to cross

a well…known dangerous mountain at midnight; called Erickstane

Brae; which was then always passed with fear and trembling。*'1'

As late as the year 1814 we find a Parliamentary Committee

declaring the road between Carlisle and Glasgow to be in so ruinous

a state as often seriously to delay the mail and endanger the lives

of travellers。 The bridge over Evan Water was so much decayed; that

one day the coach and horses fell through it into the river; when

〃one passenger was killed; the coachman survived only a few days;

and several other persons were dreadfully maimed; two of the horses

being also killed。〃*'2'  The remaining part of the bridge continued

for some time unrepaired; just space enough being left for a single

carriage to pass。  The road trustees seemed to be helpless; and did

nothing; a local subscription was tried and failed; the district

passed through being very poor; but as the road was absolutely

required for more than merely local purposes; it was eventually

determined to undertake its reconstruction as a work of national

importance; and 50;000L。 was granted by Parliament with this

object; under the provisions of the Act passed in 1816。  The works

were placed under Mr。 Telford's charge; and an admirable road was

very shortly under construction between Carlisle and Glasgow。

That part of it between Hamilton and Glasgow; eleven miles in length;

was however left in the hands of local trustees; as was the

diversion of thirteen miles at the boundary of the counties of

Lanark and Dumfries; for which a previous Act had been obtained。

The length of new line constructed by Mr。 Telford was sixty…nine

miles; and it was probably the finest piece of road which up to

that time had been made。



His ordinary method of road…making in the Highlands was; first to

level and drain; then; like the Romans; to lay a solid pavement of

large stones; the round or broad end downwards; as close as they

could be set。  The points of the latter were then broken off; and a

layer of stones broken to about the size of walnuts; was laid upon

them; and over all a little gravel if at hand。  A road thus formed

soon became bound together; and for ordinary purposes was very

durable。



But where the traffic; as in the case of the Carlisle and Glasgow

road; was expected to be very heavy; Telford took much greater

pains。  Here he paid especial attention to two points: first; to lay

it out as nearly as possible upon a level; so as to reduce the

draught to horses dragging heavy vehicles;one in thirty being

about the severest gradient at any part of the road。  The next point

was to make the working; or middle portion of the road; as firm and

substantial as possible; so as to bear; without shrinking; the

heaviest weight likely to be brought over it。  With this object he

specified that the metal bed was to be formed in two layers; rising

about four inches towards the centre the bottom course being of

stones (whinstone; limestone; or hard freestone); seven inches in

depth。  These were to be carefully set by hand; with the broadest

ends downwards; all crossbonded or jointed; no stone being more

than three inches wide on the top。  The spaces between them were

then to be filled up with smaller stones; packed by hand; so as to

bring the whole to an even and firm surface。  Over this a top course

was to be laid; seven inches in depth; consisting of properly

broken hard whinstones; none exceeding six ounces in weight; and

each to be able to pass through a circular ring; two inches and a

half in diameter; a binding of gravel; about an inch in thickness;

being placed over all。  A drain crossed under the bed of the bottom

返回目录 上一页 下一页 回到顶部 0 0

你可能喜欢的