1839.] 



THE CIVIL ENGINEER AND ARCHITECT'S JOURNAL. 



221 



CALEDONIAN CANAL. 



(Coiiy of Mr. Walker's Report, continued from page 177.) 

 Detailed Estimate referred to in Report. 



Beginning at the West end — £. 



Five or .six porniiuu'nt guide buoys, with ancliors, nve required 

 between Fort William and the cnlr.ance at Curiiaeh, lor whieh say :'.Oi.l 



For Corpach Entrance Lock, which i.s in good repair generally, but 



allow for stoppage of small leaks and soinu pointing . . . lOll 



.\ great part of the masonry of the two Corpach Locks is bad, 

 and in bad repair; this requires to be taken down and rebuilt, 

 which, with other w'orks, w ill amount to 0.(11X1 



The reach between Cnrpachand Hannnvie, one mile and a quarter 

 long, requires only the repairing and gravelling of the road, which 

 forms part of the general head of roads taken afterwards 



The eight Banuavie Locks require repairs of the masonry, gates, 



iSrc, amounting to ........ . d'tW 



Strengthening banks at a few places above Bannavie, on south 

 side, amounts to ........ ■ L''0 



In the five culverts before referred to in Bannavie Reach, pointing 



and partial repairs with puddling are required, say . . . l,tKXl 



For the Strom oll'-lct Sluices in this reach, stopping leakage, 



pointing, &c. take 100 



A weir in Moy Burn is wanted to stop the gravel before entering 

 Canal ; this, and removing present accumulation of mud brought 

 down the biu'n and lodged in the Canal, will amount to . . 300 



Gairlochy Hegtilating lock, hi masonry, platforms, sluices, &c., 

 requires an outlay of 2, (Mill 



A dam above Gairlochy Lock to shut off water of Liich Lochy 



while the lock, &c. are under repair, will be ... . .330 



For deepening the channel [from the lock into Loch Lochy, and 



warping buoy near the entrance, say . . . . . 7(10 



Deepening the entrance to Laggon Lock, east end of Loch Ijochy 

 and forming- causeways to facilitate the approach of vessi?ls, is 900 



The two Laggon Locks between Loch Lochy and the summit, or 

 Loch Oicli Le\ el, arc in good repair. 



To give 17 feet depth for navigation, the Canal between the Lag- 

 gon Locks and Loch Oich must be excavated, by drcdghig 

 through the deep cutting; this amounts to .... 0,000 



A track-path to be formed upon the slope of the deep cutting at 

 Laggon, the present banks being high and veiy inconvenient, 

 amounts to ......... OOO 



For planting spoil banks along Laggon, cutting with larches or 



firs, allow ' 200 



Loch Oich ; for shallow portions to be dccjiened by dredging, 

 amounts tu ' . . . 1 .200 



Guide-posts in Loch Oich, &c., and deepening the cut between 



Loch Oich and .\l)erchalder Lock will cost .... .550 



Facing with stones the slopes of the Canal banks in the western 

 district, not yet stoned, and gravelling and repairing track- 

 paths, are 3,700 



The works proposed for increasing the quantity of water in the 



Loch Oich, or sunmiit, for the supply of the Canal in dry seasons 2,000 



A new course for Aberchalder Burn, to prevent gravel rumiing 

 into and impeding the navigation, is ..... \fiW> 



Aberchalder Lock ; repairs of masonry, lock-gates and machinery, 



estimated at . . COO 



Dam above lock, to support tlie waters of Loeli Oich, is . . 210 



Aberchalder to Kytra, reach of two miles and a quarter, deepen- 

 ing Canal to 17 feet (the top level here to be .as originally pro- 

 posed), amounts to ........ . 1,7.")0 



Kvtra Lock, for repairs of masonry, lock-gates and machinery, say C0(.) 



Deeping for some distance below Kytra Lock, and removing sand 

 from north shipe, is ........ . 200 



llcach between Kytra and Fort Augustus Locks, Iavo miles and a 

 half, new ofl'-sct sluices to empty Canal when require<l, similar 

 to the stone sluices, will cost 2,000 



The puddle linings required in this reach, to stop present leakage 

 through the bunks, are ...... . . 8,000 



.Stoning slopes and gravelling track-path from Loch Oich to Fort 



Augustus, &c, . . ■ '. 1,800 



Fort Augusttis Locks, taking do\vn and rebuilding m.asonry, repairs 

 of gates, machinery, &c., extra of 0,900/. already taken under 

 first division, and buoy at entrance into Loch Ness, amount to . 10,rj00 



Widening entrance, Iiy rounding off angle from I^och Ness at Bona 



Ferry, say ■ 800 



Forming traek-patlrs across swash-ways in Loch Doehfour, is . 1,150 



Widening entrance at lower cud of Loch Doehfour, is . . . 250 



A waste weir at the outlet of Lnch Uoclifour, which di.seharges 



the waters of Loch Ness : . 3,450 



For guide-posts in Loch Doehfour, say ..... 20 



Doehfour Burn, forming a new course to prevent gravel from being 



carried into and impeding the navigation ..... 8.30 



Doch-garrock Kegulating Lock is in good repair. 



Reach from Doch-garroik toMuirtown, five miles excavating soil, 

 replacing with puddle, part of the line being so very leaky as to 

 require the constant feed of ten sluices at the Doch-garrock 



Lock, e.acli sluice six superficial feet, with an average head of 



one foot, to supply the waste through the banks, come to . 

 Torvcan Hill, removing gravel and supporting slope with rough 



wall 



Ofl-let sluices for emptying the reach when required, same as for 



reach abo\e Fort .\ugiistus . . .... 



Strengthening south bank of Canal .above Muirtown Locks . 

 Mnirtown Locks generally iii good order; for pointing and re- 

 pairing gates. tSrc. say ........ 



The bridge over the Laggon liOeks being stronger, with littli^ 



trade, than tlic bridge upon the turnpike road at Muirtown, say 



for changing the sitiuitii>n of the two bridges . . . . 

 Fur lengthening wharf wall at Muirtown fur trade nf Inverness and 



surrounding countiy, say 



Gravelling track-pallis and stoning slopes of eastern district of 



Canal, amount to . . . . . . . _ ■ 



Suudrv repairs of lock-gates, machinerj', foot-bridges, &e. in east 



district (inclusive of Fort Augustus) 



The Clachnaharry Locks at east end of Canal are both in good 



repair, although the entrance lock has sunk down 1 8 inches from 



time of finishing. 

 .Jetty at Clachnaharry Sea Lock, for repairing it, and three new 



dolphin piles, allow ........ 



I'our liur.ys betwein Kessock Fciry aiul Entrance Lock 

 Twenty-five milestones .....■•.. 



Substituting some stone in place of wood mooring-posts or bollards 



upon banks ..... .... 



Small lighthouses, one at each entr.ancc, one at each eml of Loch 



Lochy and one at each end of Loch Ness, say six . 



11,000 



270 



2.0110 

 1.50 



200 



100 

 1,500 

 0,200 



150 



Add 10 per cent, for contingencies 



In addition to the above, some machinery and utensils will be 

 requsite for the execution of the works and for the proper 

 establishment of the Canal, which are estimated as under ; 



A new steam-dredger 



b'our mud barges with false bottoms 



Three common barges .....•••• 



Ten houses for lock .and bridge keepers 



A diving-bell and vessel, &c. 



.•V diving helmet .....■•••• 



A crane at the Corpach B.asin 



A crane at Muirtown Wharf 



A small crane and slied, warehouse and steam-boal wharf .above 

 Muirt(:)\\n Locks .....■••■ 



Add sundry smaller utensils, i&c. 



£97,690 



2,500 

 1,2(10 

 GOO 

 6(J0 

 7.50 

 100 

 100 

 250 



200 

 500 



£101,490 



CRINAN CANAL. 



It was not, as I have already stated, imtil my ret\u-n from the survey, 

 that I received .any instnu'tions respecting the Crinan Canal, My atten- 

 tion to it was therefore mcjre general tlian otherwise it would have Ijccn ; 

 but, consideiing it was a feeder to the Caledonian Canal, and liaving Mr, 

 (Jihb .alomr with me. having remained for a night at Ardrisshaig, and 

 passed the nioining of the 4lh in the examination of the works at 

 that place, and at the east end of the canal generally, and having, 

 through the accident already referred to, been delayed the whole 

 of the d.ay upon the line, I noticed the general state of the works, and 

 made some iuquiric^s. Mr. Gibb has also since kindly sujiplied nu' \\ith 

 details .and information, whieh his long .and intimate acquaintance with the 

 subject enabled him to do, .anil 1 have been furnished hy Mr. Smith with 

 a copy of the reports on the Caledonian Canal, which contain tin- par- 

 ticulars of all the expenditure and proceedings since the Crinan Canal 

 came imdcr the management of tin; Caledonian Canal commissioners, and 

 also a statement from Mr. Gibb, relating to the riq.airs and works done 

 since the Crinan Canal was opened. Lord Brcadalb.ane, Mr. Caldwell a 

 shareholder, and Mr. J.aracs q'homson. have alsr) waited up..u m.', and 

 given me their opinions. 



The object of the Crinan Canal is, as you are no doubt aware, by a cut 

 of nine miles in -length from Loch Fnie, or r.athcr Loch Gdp, to Loch 

 (Vinan which conuuuuicatcs with Loch Eil, to save the more exposed 

 passage round the Mull, of Cautire, and a circuit of seventy mdes, a savmg 

 which is still important, though rendered less so by the introdnction of 



i'he first act for making the Crinan Canal, was passed in the ,33 Geo, III., 

 and I am infuaned that the sums raised by subscription amounted t^j about 

 £100,0(10; this being insufficient to complete the work and execute certain 

 repairs tkj.tJOO was advanced by the barons of the exchequer of S( otiand 

 from tlie forfeited estates fimd, and £30,000 by the lords of the treasury to 

 ell'cct the above (dijects. Both these sums were to be repaid, with intiMrst, 

 from the canal revenues. The canal was then opened, but the works were 

 impertcci, adfled to whi(di, abroach in one of the embankments obliged 

 the navigation to be stopped, and a further advance of £19,100 was 

 audiorized to be made in 1817, bv the barons of the excheqiu.'r, to the 

 conuuissioners of the Caledonian Canal, luider whose management the 

 canal was then placed, and still remains. 



