832 PROCEEDINGS OF THE AMERICAN ACADEMY. 



Professor Trowbridge presented the following papers by 

 title : — 



" On the Change in Conductivity of CojDper Wires resulting 

 from Stretching." By G. S. Pine. 



" On the Distribution of Magnetism on Armatures." By 

 Harold Whiting. 



Dr. Robert Amory exhibited some photographs which he 

 had taken of the Solar Spectrum, in which the D line was 

 for the first time distinct!}'' represented. 



