758 PROCEEDINGS OF THE AMERICAN ACADEMY. 



" On a Simple Device for Reading the Deflections of a Mirror 

 Galvanometer." By B. O. Peirce. 



" The Luminescence of Fluorspar." B}-- Harry W. Morse. 

 Presented by John Trowbridge. 



" An Experiment to detect the Fitzgerald-Lorentz Effect." 

 By E. W. Morley and D. C. Miller. 



" On Surface Tension at the Boundary between Liquids and 

 Vapors." By Arthur L. Clark. Presented by A. G. Webster. 



