C-V413S. 



ELEMENTS OF 

 GENERAL SCIENCE 



BY 



OTIS WILLIAM CALDWELL, PH.D. 



HEAD OF THE DEPARTMENT OF NATURAL SCIENCE 

 SCHOOL OF EDUCATION IN THE UNIVERSITY OF CHICAGO 



AND 



WILLIAM LEWIS EIKENBERRY, B.S. 



INSTRUCTOR IN THE UNIVERSITY HIGH SCHOOL 

 SCHOOL OF EDUCATION IN THE UNIVERSITY OF CHICAGO 



GINN AND COMPANY 



BOSTON NEW YORK CHICAGO LONDON 

 ATLANTA DALLAS COLUMBUS SAN FRANCISCO 



