THE ART OF PROJECTING. 



& mtanual of & *pri 



PHYSICS, 



CHEMISTRY, AND NATURAL HISTORY 



WITH THE 



PORTE LUMIERE AND MAGIC LANTERN. 



BY 



PROF. A. E. DPLBEAR, M.E., PH.D. 



(TUFTS COLLEGE.) 



lEtJition, aaeijtseti, tottij 



ILLUSTRATED. 



BOSTON 1892 

 LEE AND SHEPARD PUBLISHERS 



10 MILK STREET NEXT " THE OLD SOUTH MEETING HOUSE " 



