388 
[Assembly 
Erratic blocks. — In the more northern parts of the counties of Cort- 
land, Chenango and Otsego, masses of granite, some of which are of an 
enormous size, are seen along the road north of Truxton. These di- 
minish in size and number as you go south. In the southern counties 
but very few were met with, and those small in size. So far as I have 
been able to determine by observation, in the southern counties parti- 
cularly, as well as in the more northern, they are principally confined 
to the hills and rocks found in the vallies ; their position is such as to 
favor the idea of their having rolled down from a higher level. 
EZRA S. CAR, Assistant. 
