Tnmestone Belts of Westchester County, N.Y. 195 
shown beyond. These areas on the maps are those horizon- 
tally lined. 
PART OF 
WESTERN 
CORTLAND. 
Peexsk 
SE | 
CALOWELL : 
ne 
GRASSY PE y ecae’. f 
. _A brief description of the prominent varieties or kinds of 
these Cortland rocks will prepare the way for a discussion of 
their relation to the other rocks of Westchester County. 
