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the life of thomas telford-第62章

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drainage。  The North Level includes all that part of the Great

Bedford Level situated between Morton's Leam and the river Welland;

comprising about 48;000 acres of land。  The river Nene; which brings

down from the interior the rainfall of almost the entire county of

Northampton; flows through nearly the centre of the district。

In some places the stream is confined by embankments; in others it

flows along artificial outs; until it enters the great estuary of

the Wash; about five miles below Wisbeach。  This town is situated on

another river which flows through the Level; called the Old Nene。

Below the point of junction of these rivers with the Wash; and

still more to seaward; was South Holland Sluice; through which the

waters of the South Holland Drain entered the estuary。  At that

point a great mass of silt had accumulated; which tended to choke

up the mouths of the rivers further inland; rendering their

navigation difficult and precarious; and seriously interrupting the

drainage of the whole lowland district traversed by both the Old

and New Nene。  Indeed the sands were accumulating at such a rate;

that the outfall of the Wisbeach River threatened to become

completely destroyed。



Such being the state of things; it was determined to take the

opinion of some eminent engineer; and Mr。 Rennie was employed to

survey the district and recommend a measure for the remedy of these

great evils。  He performed this service in his usually careful and

masterly manner; but as the method which he proposed; complete

though it was; would have seriously interfered with the trade of

Wisbeach; by leaving it out of the line of navigation and drainage

which he proposed to open up; the corporation of that town

determined to employ another engineer; and Mr Telford was selected

to examine and report upon the whole subject; keeping in view the

improvement of the river immediately adjacent to the town of

Wisbeach。



Mr。 Telford confirmed Mr。 Rennie's views to a large extent; more

especially with reference to the construction of an entirely new

outfall; by making an artificial channel from Kindersleys Cut to

Crab…Hole Eye anchorage; by which a level lower by nearly twelve

feet would be secured for the outfall waters; but he preferred

leaving the river open to the tide as high as Wisbeach; rather than

place a lock with draw…doors at Lutton Leam Sluice; as had been

proposed by Mr。 Rennie。  He also suggested that the acute angle at

the Horseshoe be cut off and the river deepened up to the bridge at

Wisbeach; making a new cut along the bank on the south side of the

town; which should join the river again immediately above it;

thereby converting the intermediate space; by draw…doors and the

usual contrivances; into a floating dock。  Though this plan was

approved by the parties interested in the drainage; to Telford's

great mortification it was opposed by the corporation of Wisbeach;

and like so many other excellent schemes for the improvement of the

Fen districts; it eventually fell to the ground。



The cutting of a new outfall for the river Nene; however; could not

much longer be delayed without great danger to the reclaimed lands

of the North Level; which; but for some relief of the kind; must

shortly have become submerged and reduced to their original waste

condition。  The subject was revived in 1822; and Mr。 Telford was

again called upon; in conjunction with Sir John Rennie; whose

father had died in the preceding year; to submit a plan of a new

Nene Outfall; but it was not until the year 1827 that the necessary

Act was obtained; and then only with great difficulty and cost; in

consequence of the opposition of the town of Wisbeach。  The works

consisted principally of a deep cut or canal; about six miles in

length; penetrating far through the sand banks into the deep waters

of the Wash。  They were begun in 1828; and brought to completion in

1830; with the most satisfactory results。  A greatly improved

outfall was secured by thus carrying。  the mouths of the rivers out

to sea; and the drainage of the important agricultural districts

through which the Nene flows was greatly benefited; while at the

same time nearly 6000 acres of valuable corn…growing land were

added to the county of Lincoln。



But the opening of the Nene Outfall was only the first of a series

of improvements which eventually included the whole of the valuable

lands of the North Level; in the district situated between the Nene

and the Welland。  The opening at Gunthorpe Sluice; which was the

outfall for the waters of the Holland Drain; was not less than

eleven feet three inches above low water at Crab…Hole; and it was

therefore obvious that by lowering this opening a vastly improved

drainage of the whole of the level district; extending from twenty

to thirty miles inland; for which that sluice was the artificial

outlet; would immediately be secured。  Urged by Mr。 Telford; an Act

for the purpose of carrying out the requisite improvement was

obtained in 1830; and the excavations having been begun shortly

after; were completed in 1834。



A new cut was made from Clow's Cross to Gunthorpe Sluice; in place

of the winding course of the old Shire Drain; besides which; a

bridge was erected at Cross Keys; or Sutton Wash; and an embankment

was made across the Salt Marshes; forming a high road; which; with

the bridges previously erected at Fossdyke and Lynn; effectually

connected the counties of Norfolk and Lincoln。  The result of the

improved outfall was what the engineer had predicted。  A thorough

natural drainage was secured for an extensive district; embracing

nearly a hundred thousand acres of fertile land; which had before

been very ineffectually though expensively cleared of the surplus

water by means of windmills and steam…engines。  The productiveness

of the soil was greatly increased; and the health and comfort of

the inhabitants promoted to an extent that surpassed all previous

expectation。



The whole of the new cuts were easily navigable; being from 140 to

200 feet wide at bottom; whereas the old outlets had been variable

and were often choked with shifting sand。  The district was thus

effectually opened up for navigation; and a convenient transit

afforded for coals and other articles of consumption。  Wisbeach

became accessible to vessels of much larger burden; and in the

course of a few years after the construction of the Nene Outfall;

the trade of the port had more than doubled。  Mr。 Telford himself;

towards the close of his life; spoke with natural pride of the

improvements which he had thus been in so great a measure

instrumental in carrying out; and which had so materially promoted

the comfort; prosperity; and welfare of a very extensive

district。*'3'



We may mention; as a remarkable effect of the opening of the new

outfall; that in a few hours the lowering of the waters was felt

throughout the whole of the Fen level。  The sluggish and stagnant

drains; cuts; and leams in far distant places; began actually to

flow; and the sensation created was such; that at Thorney; near

Peterborough; some fifteen miles from the sea; the intelligence

penetrated even to the congregation then sitting in churchfor it

was Sunday morningthat 〃the waters were running!〃 when

immediately the whole flocked out; parson and all; to see the great

sight; and acknowledge the blessings of science。  A humble Fen poet

of the last century thus quaintly predicted the moral results

likely to arise from the improved drainage of his native district:…



   〃With a change of elements suddenly

    There shall a change of men and manners be;

    Hearts thick and tough as hides shall feel remorse;

    And souls of sedge shall understand discourse;

    New hands shall learn to work; forget to steal;

    New legs shall go to church; new knees to kneel。〃



The prophecy has indeed been fulfilled。  The barbarous race of

Fen…men has disappeared before the skill of the engineer。  As the

land has been drained; the half…starved fowlers and fen…roamers

have subsided into the ranks of steady industrybecome farmers;

traders; and labourers。  The plough has passed over the bed of

Holland Fen; and the agriculturist reaps his increase more than a

hundred fold。。  Wide watery wastes; formerly abounding in fish;

are now covered with waving crops of corn every summer。  Sheep graze

on the dry bottom of Whittlesea Mere; and kine low where not many

years since the silence of the waste was only disturbed by the

croaking of frogs and the screaming of wild fowl。  All this has been

the result of the science of the engineer; the enterprise of the

landowner; and the industry of our peaceful army of skilled

labourers。*'4'



Footnotes for Chapter XIII。



*'1' Telford's Life; p261



*'2' The piers are built internally with hollow compartments; as at

the Menai Bridge; the side walls being 3 feet thick and the cross

walls 2 feet。  P
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