Xl y if£ m/ 
SYNOPTICAL VIEW 
OF THE 
GEOLOGICAL SUCCESSION 
•? 
OF 
ORGANIC TYPES. 
By ALEXANDER WINCHELL, M. A., 
PROFESSOR OF GEOLOGY, ZOOLOGY, AND BOTANY IN THE UNIVERSITY 
OF MICHIGAN. 
SECOND EDITION. 
ANN ARBOR: 
PRINTED AT DR. CHASE’S STEAM PRINTING HOUSE 
1867. 
