OF ARTS AND SCIENCES. 507 



Professor Pickering called attention to the urgent need of 

 a complete index to all the publications of the Academy, and, 

 on his motion, it was 



Voted, To refer this matter to the Committee of Pub- 

 lication. 



On the motion of the Corresponding Secretary, it was 



Voted, To meet, on adjournment, on the second Wednes- 

 day in June. 



The following papers were presented by title : — 



Contributions from the Physical Laboratory of Harvard 

 University. — I. On a New Method of determining the Me- 

 chanical Equivalent of Heat. By A. G. Webster. 



Researches conducted with the Aid of the Rumford Fund. 

 I. Early Experiments in transmitting Musical Sounds. H. Ob- 

 servations of Atmospheric Refraction. HI. Accidental Errors 

 and the Rejection of Doubtful Observations. IV. Stellar 

 Photography. V. Specular and Diffuse Refraction and Re- 

 flection. By Edward C. Pickering. 



Seven hundred and eighty-fourth Meeting. 



June 10, 1885. — Adjourned Annual Meeting. 



The President in the chair. 



The President announced the death of the oldest Resident 

 Fellow, Robert Treat Paine, of Brookline. 



The Corresponding Secretary read a letter from Mr. John 

 C. Ropes, acknowledging his election as a Resident Fellow. 



The report of tlie Treasurer was received and audited. 



The report of the Librarian was read and accepted. 



The following report of the Rumford Committee was read 

 and accepted : — 



The Rumford Committee present the following report for 

 the year ending with this Annual Meeting. 



The researches connected with light or heat wliich have 

 been instituted or continued from last year, and conducted 

 by sub-committees of the general Committee, are, — 



1st. On some Applications of Spectrometry and Photome- 

 try to Astronomy. By Prof. E. C. Pickering. 



