OF ARTS AND SCIENCES. 505 



The Librarian presented his annual report, of which the fol- 

 lowing is an abstract : — 3,329 books and pamphlets have been 

 added to the Library during the past year, 2,429 of which were 

 obtained by gift and exchange, 687 purchased with the appro- 

 priation from tlie income of the General Fund, at a cost of 

 8334.98, and 213 with the appropriation from the income of the 

 Rumford Fund, at a cost of $23.92. During the year, 561 vol- 

 umes were bound at an expense of $620.10, of which 826.80 was 

 charged to the Rumford Fund. The total expenditure for books, 

 periodicals, and binding amounted to 8979.00 of which 850.72 

 was charged to the Rumford Fund. 180 books were borrowed 

 from the Library by 31 persons, 20 of whom were Fellows of the 

 Academy. 



The following reports were also presented : — 



Report of the Rumford Committee. 



At a meeting, October 26, 1896, the Committee voted that the sum of 

 $400 be put at the disposal of Professor Henry Crew, of Northwestern 

 University, for investigations ou the electrical, chemical, and thermal 

 effects of the electric arc. 



The sum of $100 was also voted to Mr. R. 0. King, for investigations 

 ou the Thomson effect in metals. 



John Trowbridge, Chairman. 



May 12, 1897. 



Report of the C. M. Warren Committee. 



In behalf of the C. M, Warren Committee I have to report that during 

 the past year a grant of six hundred dollars ($600) has been made to 

 Professor C. F. Mabery, of Cleveland, Ohio, in aid of his investigations 

 of the chemistry of petroleum ; and a grant of two hundred dollars 

 (6200) to Professor H. O. Hofman, of Boston, in aid of his investiga- 

 tion of the formation-temperatures of certain silica-iron-lime slags of 

 metallurgical importance. 



I have received from Professor F. C. Phillips a highly satisfactory 

 " report of progress " concerning his researches on natural gas, in behalf 

 of which a grant was made by the Academy year before last. 



Professor Mabery's researches on petroleum have gone on steadily 

 during the year, and several important papers relating to them have been 

 published by him. 



F. H. Stoker, Chairman. 



