LABORATORY LESSONS 



IN 



GENERAL SCIENCE 



BY 



HERBERT BROWNELL, B.Sc. 



PROFESSOR OP SCIENCES IN SECONDARY EDUCATION ; AUTHOR OF 

 "LESSONS IN PHYSICS," AND "LESSONS IN CHEMISTRY" 



TEACHERS COLLEGE, UNIVERSITY OF NEBRASKA 

 LINCOLN, NEBRASKA 



THE MACMILLAN COMPANY 

 1917 



All rights reserved 



