PLATE VI. — View of the lower end of Section 3. The upper portion ot the 

 Moscow shales is exposed at the foot of the section. The projectinjj Styliohna 

 band, the jirav and much-jointed black Genesee shales, and a portion ot the 

 Cashaqna shales appear above it. —Photographed by A. \V. GK.\iiAU. 



