LABORATORY EXERCISES 



"THE FIRST YEAR OF SCIENCE 



BY 



JOHN C. HESSLER, Ph. D. 



PROFESSOR OF CHEMISTRY, THE JAMES MILLIKIN UNIVERSITY 



LATE INSTRUCTOR IN THE UNIVERSITY OF CHICAGO AND 



IN THE HYDE PARK HIGH SCHOOL, CHICAGO 



ov TroXX' aXXct 



BENJ. H. SANBORN & CO. 



CHICAGO NEW YORK BOSTON 



1915 



