PROCEEDINGS. 



Eight hundred and third Meeting. 



May 24, 1887. — Annual Meeting. 



The President in the chair. 



The Corresponding Secretary read the following letters : 

 from Messrs. Martin Brimmer and J. Walter Fewkes, accept- 

 ing Fellowship ; from Professor William R. Ware, accepting 

 Associate Fellowship ; from the Hon. Frederic W. Lincoln, 

 resigning his Fellowship. A letter was read announcing the 

 death, on the 2d instant, of Professor Bernhard Studer, of 

 Bern, Foreign Honorary Member, at the age of ninety-three 

 years. 



On the motion of the Corresponding Secretary, it was 

 Voted, To meet, on adjournment, on the third Wednesday 

 in June, at eight o'clock. 



The Reports of the Treasurer and Librarian were read and 

 accepted. 



The following papers were presented : — 



" Acoustic Submarine Signals : for Use on Steam Vessels 

 in Foggy Weather." By John M. Batchelder. 



" Measurements of Telephonic Currents produced by a 

 Blake Transmitter with varying Pressure." By Charles R. 

 Cross. 



VOL. XXIII. (n. S. XV.) 20 



