THE 



FIRST YEAR OF SCIENCE 



BY 



JOHN C. HESSLER, Ph. D. 



PROFESSOR Or CHEMISTRY, THE JAMES MILLIKIN UNIVERSITY 



LATE INSTRUCTOR IN THE UNIVERSITY OF CHICAGO AND 



IN THE HYDE PARK HIGH SCHOOL, CHICAGO 



' a\Xa irci\v 



BENJ. H. SANBORN & CO. 



CHICAGO NEW YORK BOSTON 

 1916 



