[ 266 ] 



B. A lock-gate, through which the 

 barges are let that navigate the ri- 

 ver, on account of the obllru(5lion 

 of the cafcade, C. 



D. D. A gang-way from one fide to the 

 other. 



E. The canal. 



F. The pleafure-boat, drawn by one 

 horfe. 



The effed: of coming at once on to Bar^ 

 ton Bridge^ and looking down upon a large 

 river, with barges of great burthen failing 

 on it ; and up to another river, hung in 

 the air, with barges towing along it, form 

 altogether a fcenery fomewhat like en* 

 chantment, and exhibit at once a view 

 that mufl: give you an idea of prodigious 

 labour i for the canal is here not only car- 

 ried over the Irwell, but likewife acrofs 

 a large valley, being banked up on each 

 iidc in a furprizing manner, to form a 

 mound for the water, and the channel 

 alfo filled up to the ufual depth, that the 

 banks, at a place where they are entirely 

 artificial, and confequently weaker than 

 where natural, might not be endangered 

 by the great prelTure of fo large a body of 



water 



