58 Onthe Anthracite Region, &c. of Pennsylvanta- 
coal mountain. The excavation of a sufficient magnitude 
for the passage of teams, has been extended more than 600 
feet in a hard rock of quartz pebbles, without finding coal. 
Twelve workmen are constamly employed, and have advan- 
ced about a foot each day. Shafts have been sunk 60 feet 
in the table land, at the base of the narrow rocky ridge: 
good coal was found after penetrating seven feet of earth and 
slate. The bottom of the shaft is supposed to be about 80 
feet above the tunnel. If no coal is struck in proceeding 
horizontally, the tunnel will still be serviceable for discharg- 
ranges, and deep ravines. 
The improvement of the navigation of the Lehigh, is one 
of the conditions annexed to the charter of the company: this 
has already been eflécted in respect to a descending naviga- 
tion, from Mauch Chunk to the Delaware, and further im- 
sh. There is considerable good pine and other timber, ad- 
jacent to the Lehigh, 18 miles above Match Chunk, muck 
of which is the property of the company, who have thus form- 
ed a settlement for cutting and rafting timber, at which they 
employ 150 men. The descent from Stoddartsville to 
Mauch Chank is 925 feet, and for the effectual improvement of 
the navigation, 38 large dams will be required. They will 
afford valuable sites for mills and manufactures. When the | 
oe hunk to Easton is 364 feet, to overcome which, it 
Page. ited that 21 dams and 52 locks will be necessary- 
Many dams have been already constructed of pine logs, at am ~ 
