RECORD. 

 From January 1, 1900, to December 31, 1900. 



January 8, 1900. 



President Engler in the chair, nineteen persons present. 



The nominating committee reported that 122 ballots had 

 been counted, and the following officers for 1900 were de- 

 clared duly elected : — 



President Edmund A. Engler. 



First Vice-President. D. S. H. Smith. 



Second Vice-President M. H. Post. 



Recording Secretary William Trelease. 



Corresponding Secretary. . . .Joseph Grindon. 



Treasurer Enno Sander. 



Librarian Gustav Hambach. 



Curators Gustav Hambach, 



Julius Hurter, 

 Hermann von Schrenk. 



Directors Amand Ravold, 



H. W. Eliot. 



The President delivered an address on the condition of the 

 Academy and its work during the year 1899.* 



The Treasurer submitted his annual report, showing invested 

 funds to the amount of $4,400.00 and a balance of $2,239.13 

 carried forward to the year 1900, of which $2,000.00, derived 

 from a former investment, awaited reinvestment.! 



The Librarian submitted his annual report. J 



Part II of a paper by Dr. T. J. J. See, on the temperature 

 of the sun and the relative ages of the stars and nebulae, was 

 read by title and referred to the Council. 



Mr. A. S. Langsdorf described the methods of determin- 

 ing the rates of vibration of sounding bodies, with special 



* Transactions 9 : xxvii, f Transactions 9 : xxxi. J Transactions 9 : xxxi. 



