STUDENT'S MANUAL OF EXERCISES 

 IN ELEMENTARY BIOLOGY 



BY 

 BENJAMIN C. GRUENBERG 



CHAIRMAN DEPARTMENT OF BIOLOGY, JULIA RICHMAN HIGH SCHOOL 



NEW YORK 



AND 



FRANK M. WHEAT 



CHAIRMAN DEPARTMENT OF BIOLOGY, GEORGE WASHINGTON HIGH SCHOOL 



NEW YORK 



GINN AND COMPANY 



BOSTON NEW YORK CHICAGO LONDON 

 ATLANTA DALLAS COLUMBUS SAN FRANCISCO 



