GENERAL BIOLOGY 



A Book of Outlines and Practical Studies 

 for the General Student 



By JAMES G. NEEDHAM, Ph.D. 



"i 



ASSISTANT PROFESSOR OF LIMNOLOGY AND GENERAL BIOLOGY 

 IN CORNELL UNIVERSITY 



WITH 64 PRACTICAL STUDIES, 



287 TEXT FIGURES, AND 



9 PORTRAITS 



ITHACA, N. Y. 



THE COMSTOCK PUBLISHING CO., 

 1910 



