Plate 10 



A portion of the wall in A. W. Sleight's quarry. In the foreground Trenton con- 

 glomerate with S o 1 e n o p o r a c o m p acta resting on probable " Calciferous " 

 which is exposed in the upper half of the picture. The two are disconformable, 

 but have the same dip to the southeast 



