on Rivers and Canals . 655 
too far into the regions of conjecture; but as fuch mif- 
takes as thefe are no ways prejudicial to my fellow crea- 
tures, to whom I with to be ufeful, and as they may give 
occafion for others to rectify them, and fo lead them to a 
fubjedt which otherwife, perhaps, they might never have 
attended to, I fhall hope for indulgence from all thofe 
0 
who wifh well to humanity and to ufeful knowledge. 
4 Q a 
86 . A 
