BULL. GEOL. SOC. AM. 



VOL. 20, 1908. PL. 46 



Figure 1. — Quarry of Rexxett Cement and Quarry Company. Buffalo. New York 



Upper 8 feet Onondaga limestone (Lower Middle Devonic i . resting on eroded Cobbleskill 

 (Manlius of Siluric), which in turn rests disconformably on the Bertie waterlime (top of 

 Salina of Siluric) having Eurypterus. 



Figure 2. — Bear Grass Quarries. Louisville, Kentucky 

 The Onondaga coral reef rests disconforrnablv on the Louisville coral reef 



LIMESTONE QUARRIES NEAR BUFFALO. NEW YORK, AND LOUISVILLE. KENTUCKY 



