OF ARTS AND SCIENCES. 331 



" 2. Fellows, resident in the State of Massachusetts, only, 

 may vote at the meetings of the Academy. Each Resident 

 Fellow shall pay an admission fee of ten dollars and, such 

 annual assessment, not exceeding ten dollars as shall be 

 voted by the Academy at each annual meeting." 



Voted, That the assessment for the current year be five 

 dollars. 



The following papers were presented by title : — 



On the Composition of Certain Petroleum Oils and Refin- 

 ing Residues. By Charles F. Mabery. 



The Analysis of Cupric Bromide, and the Atomic Weight 

 of Copper. By Theodore W. Richards. 



The Effect of Electrical Oscillations on the Molecules of 

 Iron. By John Trowbridge. 



A biographical notice of James Prescott Joule was read by 

 Professor Dolbear. 



Eight hundred and thirty-sixth Meeting. 



November 12, 1890. — Monthly Meeting. 



The President in the chair. 



Mr. George B. Clark made a communication on telescope 

 lenses. 



The following papers were presented by title : — 



On the Influence of the Strength of the Magnet in a 

 Magneto Telephone Receiver. By Charles R. Cross and 

 Harry E. Hayes. 



On Electrical Condensers. By Charles Nutt. 



Eight hundred and thirty-seventh Meeting. 



December 18, 1890. — Monthly Meeting. 



The President in the chair. 



The Corresponding Secretary read a letter from the Inter- 

 national Congress of Ornithology, inviting the Academy to 

 send delegates to its approaching meeting at Budapest in 

 May, 1891 ; also, a letter from the American Chemical Soci- 



