BRUSH— A KINETIC THEORY OF GRAVITATION. 103 X 



vestigated, pending which a description of it, and of the complete 

 apparatus and its timing device, as well as the general results ob- 

 tained, is reserved for a future paper. The pertinent fact here is 

 that bismuth apears to fall a little faster than zinc, thus confirming 

 the pendulum experiments. 



Cleveland, 

 April, 1922. 



PROC. AMER. PHIL. SOC, VOI . LXI, N, NOV. l6, I922. 



