KNOX COUNTY. 



341 



The red or chocolate shales, the lower member of the Sub-carboniferous, 

 constitute a well marked horizon, and enable us to determine the relative 

 position of the different strata in the wells which reach this material. 



The location of eight wells is indicated on the accompanying map of 

 the territory around the junction of the Kokosing and Mohican rivers, 

 and the following table gives the depth below the surface of the top of 

 the red shale : 



"WeU No. 1 

 2 

 3 

 4 

 5 

 6 

 7 



Tt. 



615 



615 



591 



562 (?) 



705 



575 



607 



627 



By barometrical observations taken as rapidly as practicable, and on a 

 clear day, the elevation of the surface at each of the wells above that of 

 Nos. 1 and 2, is as follows : 



No. 3 , 

 4 

 5 



Ft. 

 50 



125 

 95 

 75 

 25 

 30 



From these data, the dip of the upper surface of the red shale between 

 the different wells, is as follows : 



Ft. 



From No. 8 to Nos. 1 and 2 18 



" No. 8 to No. 6 33 



" No. 4toNo8. 1 aiid2 128 (?) 



" No. 5 to Nos. land 2 135 



" No. 5 to No. 6 150 



" No. 3 to Nos. 1 and 2 74 



" No. 7 to No. 6 48 



" Nos. 1 and 2 to No. 6 15 



" No. 4 to No. 8 160 (?) 



" No.7toNo.2 33 



" No.7toNo.8 15 



" No. 3 to No. 8 56 



" No.3toNo.7 41 



" No. 3 to No. 6 189 



