Proceedings of the American Academy of Arts and Sciences. 

 Vol. XLI. No. 27. — March, 1906. 



CONTRIBUTIONS FROM THE JEFFERSON PHYSICAL LABORATORY 

 HARVARD UNIVERSITY. 



STUDIES ON FLUORITE. 



I. THE FLUORESCENCE OF FLUORITE. 

 II. THE THERMO-LUMINESCENCE OF FLUORITE. 

 III. GASEOUS AND LIQUID INCLUSIONS IN FLUORSPAR. 



By Harry W. Morse. 



With Thhee Plates. 



Investigations on Light and Heat made or published, wholly or in part, with Appropriations 

 from the Romford Fund. 



