[ *S* J 



ports of Hull and Liverpool, is carried acrois 

 the kingdom, without any very material in- 

 terruption, except at Harccajlle -, but there 

 it follows a valley, which, contrary to moil, 

 terminates againft hills, without any wind- 

 ing around them ; fo that the navigation 

 mud either be here flopped, and a land car- 

 riage, like the American ones, at the falls in 

 their rivers, be the confequence, or the 

 range of hills, which faced them, pierced 

 through : The attempt was an immenle one j 

 but it is made, and will undoubtedly fucceed. 



The tunnel in the Duke of Bridgwater 's 

 navigation, is of afmall breadth, as it is the 

 termination of the canal, and boats made on 

 purp^fe for entering it ; but Harecajlle be- 

 ing almoit in the center of a navigation of 

 ?.n hundred miles, a fubterrane mud: of ne- 

 ceffity be fpacious enough to admit all the 

 traffic of the canal, palling and repaffing, or 

 it would be ufelefs. The canal is therefore 

 carried under-ground in its common breadth 

 and depth ; it is twelve feet wide, and nine 

 high ; and will extend under an high range 

 of country above a mile arid half. The firft 

 eftimate, or rather fuppofition of the ex- 

 pence, was 10,000 /. but it io now faid that 

 that fum will prove very infufficient; the 

 immenfity of the undertaking not having (re- 

 lative to the eftimate) been duly confidered. 



It is certainly an amazing work : About 

 four hundred yards of it are linifhed. The 



method 



