executed at Walkden-Moar, yj 



' The various feeders which are loofenecl by opening the 

 €Ods in the higher level colheries, as well as three fufficlent 

 refervoirs, which may occafionally be reforted to, and ufed 

 in a dry feafon, keep the higher level always to its height, 

 and aflford a coiiftant fupply of water to fill the locks, for the 

 purpofe of working the inclined plane. 



This inclined plane was begun in September, 1795; it was 

 finifhed, and in ufe, in 06lobcr, 1797. 



Of this, as of mod: of his other great works, the Duke of 

 Bridgewater was himfelf the planner and contriver : — to pro- 

 je6l greatly, and to execute completely, are the perfe(£i:ion of 

 genius. 



The fingularity of the place in which it is conftrufted ; 

 the original boldnefs of the defign ; the ingenuity and me- 

 chanifm difplayed in planning and executing it ; the difpatch 

 with which it has been finiflied ; the fimplicity, beauty, and 

 harmony of its parts, tending to one united whole; and, 

 above all, the perfeftion to which it is proved to have been 

 brought, now that it is practically in ufej render it equally 

 aftonifliing with any other of the ftupendous works which 

 have been fo ably planned, and fo fuccefsfully executed, by 

 the firft projcdor and patriotic father of Inland Navigation. 

 I have the honour to be, &:c. 



Francis H. Egerton, 



Brldgewater-H ou fe, 

 March 5, 1800. 



References to the Plate, 

 a to Z', (Fig. 4.) t)ip of the metals and waggon-road on the 

 mider-^ground inclined plane. From Z*, on the lower level, 

 to the mouth of the tunnel, is three miles. A, The eaft 

 lock. B, the weft lock. C, reprefents a fcAion of the 

 lock: the dotted line iliows the horizontal depth, and the 

 black line under it, the (lope upon which the waggon wheels 

 nm to receive the loaded boat, or to bring the empty boat 

 into the lock, dd^ the main-fliaft, four feet eleven inches, 

 diameter, upon which the ropes work to wind the boats up 

 and down ; and here alfo the break-wheel is faftened on, to- 

 gether with a fpur-vvhcel, and a nut-wheel. See fig. 5, No. i. 

 f^ a paflage betwixt the higher level and the locks, ffy % 



loadecj 



