494 RECORDS 



BUSINESS MEETING. 

 October i, 1900. 



Academy met at 8:15 P. M., President Woodward presiding. 



The minutes of the last business meeting were read and ap- 

 proved. 



The Secretary reported from the Council as follows : 



The resignation of Mr. Gilbert van In gen as Editor, and the 

 extension on the part of the Council of a cordial vote of thanks 

 to Mr. van Ingen for his successful services as Editor. 



The adoption of a time limit for all papers presented before 

 the Academy, said time limit to be printed on the announcements 

 in each case. 



The following Candidate for resident membership, approved 

 by the Council, was duly elected : 



Richard H. Cunningham, M.D., 200 West 56th Street. 



Richard E. Dodge, 

 Recording Secretary. 



SECTION OF ASTRONOMY, PHYSICS, AND 

 CHEMISTRY. 



October i, 1900. 



Section met at 8:35 P. M., Prof. Wm. Hallock presiding. 



The minutes of the last meeting of Section were read and ap- 

 proved. 



The following program was then offered : 



E. R. von NardrofF, On the Application of Fizeau's 

 Method to the Determination of the Velocity of Sound. 

 (Illustrated.) 



J. K. Raes, Scientific Instruments at the Paris Exposi- 

 tion. (Informal report.) 



W. Hallock, A Peculiar Lightning Discharge. 



Summary of Papers. 



Professor von NardrofF used as a source of sound a very shrill 

 whistle giving sound of a short wave length beyond the limits of 



