THE LIFE OF INLAND 



WATERS i 



An elementary text book of fresh- water biology 

 for American students 



By 



JAMES G. NEEDHAM 

 Professor of Limnology in Cornell University 



and 



J. T. LLOYD 



Instructor in Limnology in Cornell University 



1915 



THE COMSTOCK PUBLISHING COMPANY 



ITHACA, NEW YORK 



