Proceedings of the American Academy of Arts and Sciences. 

 Vol. XLIII. No. 1. — June, 1907. 



CONTRIBUTIONS FROM THE JEFFERSON PHYSICAL LABORATORY, 



HARVARD UNIVERSITY. 



STUDIES ON FLUORITE. 



IV— THE KATUODO-LUMINESCENCE OF FLUORITE. 



By Harry W. Morse. 



LI3RARY 

 NEW YORK 



With a P LATE . BOTANICAL 



liAUDEN. 



Investigations on Light and Heat made and published, wholly ob in paet, with Appropriation 



FROM THE RuMfORD FUND. 



