330 proceedings: philosophical society 



170th meeting, May 4, 1912, was a joint meeting with the Washington 

 Academy of Sciences, and at which Prof. Dayton C. Miller of the 

 Case School of Applied Science spoke on Sound waves; how to photograph 

 them and what they mean. 



711th meeting, May 18, 1912, Vice-President Fischer in the chair. 

 Two papers were read : 



Some problems in wireless telegraphy: F. A. Kolster, of the Bureau of 

 Standards. 



Present flame standards of candle power: E. C. Crittenden, of the 

 Bureau of Standards. R. L. Faris, Secretary. 



