826 PROCEEDINGS OP THE AMERICAN ACADEMY. 



size in addition to the duties of the Assistant Librarian required by the 

 business of the Society, and it is hoped that the type-written catalogue, 

 left unfinished by the death of Dr. Holden, can be completed this year 

 by an experienced cataloguer. It will soon be necessary to re-bind a 

 large number of sets of books, which, owing to the perishable nature 

 of the bindings formerly used, are now crumbling away. 



A. Lawrence Rotch, Librarian. 

 May 9. 1906. 



Report of the Rumford Committee. 



From the appropriation of $1000 in aid of research voted at the last 

 annual meeting, grants have heen made to the following persons in aid 

 of the researches specified. 



October 11, 1905. Arthur B. Lamb, of Harvard University, Specific 

 Heat of Salt Solutions, $200. 



December 13, 1905. John A. Parkhurst, of the Yerkes Observa- 

 tory, for the purchase of a Hartmann photometer, $225. 



Professor Charles B. Thwing, of Syracuse University, Therrno-Elec- 

 tric Power of Metals (second appropriation), $400. 



March 14, 1906. Professor Edwin H. Hall, of Harvard University, 

 Thermo-Electric Properties of Metals, $100. 



Professor Frederic E. Kester, of the Ohio State University, Joule- 

 Thomson Effect in Gases, $50. 



April 11, 1906. Professor Edwin H. Hall, of Harvard University, 

 Thermo-Electric Properties of Metals (additional), $25. 



The appropriation of $100, made in 1903 to Professor Sidney D. 

 Townley for the construction of a stellar photometer has been returned 

 to the Treasurer of the Academy, as a change of location precludes 

 carrying out the investigation which he had planned. 



The investigation of Professor Dewitt B. Brace on Double Refrac- 

 tion in Gases in an Electrical Field, for which grants had been made 

 amounting to $400, has been brought to a close by his sudden death. 

 The appropriation had been mostly expended in the construction of 

 apparatus, and it is hoped that the research begun by him may be 

 prosecuted by one of his colleagues. 



The pamphlet, relative to the scientific results which have been 

 obtained by the application of the bequest of Count Rumford, referred to 

 in the last Annual Report as in press, has been issued, and copies have 

 been sent to a large number of physicists. 



