RECORDS. 



469 



SECTION OF ASTRONOMY AND PHYSICS, 

 April 4, 1898. 



The Section organized with Mr. P. H. Dudley, the Chairman, 

 presiding. There were sixteen persons present. After the 

 reading of the minutes of the last meeting, the following papers 

 were presented : 



Mr. W. G. Levison showed a Photographed Eye-Piece 

 Micrometer, and described the construction of it, also speaking 

 of micro-organisms as a complication in washing photographic 

 plates. He, in addition to this, described and showed a model 

 of a simple phosphoroscope. The discussion on these subjects 

 was participated in by W. Hallock, C. F. Cox, H. F. Osborn, 

 and C. C. Trowbridge. 



The next paper was entitled A Modification of Mance's 

 Method of Measuring Battery Resistance, by W. S. Day. 

 This was treated mathematically by Dr. Day at considerable 

 length. After this Frank Schlesinger read a short paper upon 

 The Pr.esepe Group, mentioning the measurement and reduc- 

 tion of the Rutherford photographs of this group. After a few 

 questions by members on the subject of the measurements the 

 meeting adjourned. 



Reginald Gordon, 

 Secretary of Section. 



SECTION OF BIOLOGY. 

 April i i, 1898. 



Professor Wilson in the chair. Eighteen persons present. 

 Election of sectional officers for ensuing year. Dr. Dean sec- 

 onded by Professor Stratford, moved that Professor Wilson and 

 Mr. Calkins be reelected to their respective offices, and the 

 Secretary was directed to cast one affirmative ballot. 



The following programme was announced : 



I. 0. S. Strong, A New Point on the Innervation of 

 the Lateral Line Organs. 



Annals X. Y. Acad. Scl, XI, January 18, 1899 — 31 



