256 Mr. Farey’s Account , &c . 
of the vales, occasion them again to dip and disappear in the 
bottoms of each of these vales. 
I am, Sir, 
your obliged and very humble servant. 
Upper Crown-street, Westminster, 
January 31, 1811. 
J. FAREY, SEN. 
Mineral Surveyor* 
