sectio:n" a. 

 PHYSICAL SCIENCE. 



REPORTS OF MEETINGS— 1901. 



Monday evening, Januarj^ 7. The " Common Battery " Sys- 

 tem of Telephony, with drawings. J. S. WadsworTh. 



Monday evening, January 21. Discussion of the names of 

 scientists and inventors suggested as candidates for the ' ' R oil 

 of Honor " in Electrical Discovery and Invention. 



Albert E. Clough and Edward J. Burnham. 



Monday evening, February 4. Lantern slide exhibition. 



William H. Husk. 



Monday evening, Februar^^ 18. Description of the Method 

 of Paper Making. Charlbs R. Dustin. 



Monday evening, March 4. The McDonough Sj-stem of 

 Color-Photography, with examples. Wii,liam H. Husk. 



Monday evening, March 18. The Radioactive Substances 

 Radium and Polonium. (Supplementary to the address of Oc- 

 tober I, 1900.) Henri Sch^fper. 



Monday evening, April i. The Respiration Calorimeter and 

 the Researches of Prof. W. O. Attwater in Dietetics. 



William K. Robbins. 



Monday evening, April 15. Cameras and Photography. 



Frants; French. 



Monday evening. May 13. The Electric Furnace and the 

 Chemistry of High Temperatures. Illustrated by means of an 

 electric furnace, in which calcium carbide was produced. 

 Dr. Arnold L. Bossi, assisted by Albert E. Clough. 



Monday evening. May 27. Extremely Eow Temperatures 

 and the Liquefaction and Solidification of Gases, with experi- 

 ments with liquid carbon dioxide. Henry A. Stearns. 



