AN. INT RODUE TION 
TO THE STUDY OF 
Wale BIS ety aU ba 
INTENDED AS 
A HAND BOOK 
FOR THE 
UC Sue Ons Stee Es IN TS: 
IPARa LI. 
BY 
JAMES HALL, 
STATE GEOLOGIST AND PALAONTOLOGIST, 
ASSISTED BY 
JOHN M. CLARKE. 
[From the Report of the State Geologist for 1893.] 
ALBANY : 
JAMES B. LYON, STATE PRINTER, 
“1894, 
