GEOLOGICAL SOCIETY OF PENNSYLEANI A. 



327 



Sharp mountain are remarkable for cheir almost perpen- 

 dicular dip, being from 83 to 87^ north. The veins in 

 Locust mountain dip from 60 to 70° south. In their 

 direction, these veins, like the strata of the adjacent sand- 

 stone and slate, are nearly parallel with one another, 

 bearing between 60 and 70° south west or north east 

 from a given point, and parallel to the course of the 

 higher ridges of the mountains. On the map those veins 

 only are marked which are over 3 feet wide, and have 

 been exposed to observation by mining operations, in 

 which case their courses and dip are only given. It 

 is quite certain, however, that many more coal beds exist 

 within the extent of this map which will be opened in 

 future times. The mining operations are all carried on 

 by the Little Schuylkill company, who employ from 

 200 to 300 workmen, conveying their coal by means of 

 locomotive engines to Port Clinton, their landing on the 

 Schuylkill canal. 



