484 PROCEEDINGS OP THE AMERICAN ACADEMY 



Professor Gray spoke upon the question of a rebatement of 

 the fees of the Academy, and the following gentlemen were 

 appointed a committee to consider this subject : — 



Messrs. Edward Atkinson, Henry P. Kidder, and Thomas 

 T. Bouvd. 



On the motion of the Corresponding Secretary, it was 



Voted, That the next meeting be an adjourned stated 

 meeting. 



The following papers were presented : — 



" On the Systematic Observation of Variable Stars." By 

 Edward C. Pickering. 



" On a New Magnetic Theory of Molecular Action." By 

 Harold Whiting. (By invitation.) 



Seven hundred and seventy-first Meeting. 



April 9, 1884. — Adjourned Stated Meeting. 



The President in the chair. 



The Corresponding Secretary read letters announcing the 

 death of Signor Quintino Sella, of Turin, President of the 

 Reale Accademia dei Lincei, of Rome ; and of Dr. George 

 Engelmann, of St. Louis. 



The following papers were presented : — 



" On the Determination of the Varying Positions of Cir- 

 cumpolar Stars." B}- William A. Rogers. 



" On the Phases of the Moon." By Arthur Searle. 



" On the Mean Right Ascensions of One Hundred and 

 Thirty-three Stars near the North Pole." By Truman H. 

 Safford. 



The following papers were presented by title : — 



" On /3-Bromtetrachlorpropionic Acid." By Charles F. 

 Mabery. 



" On a- and /9-Chlordibromacrylic Acids." By Charles F. 

 Mabery and Rachel Lloyd. 



" On yS-dibromdichlorpropionic and ^-bromdichloracrylic 

 Acids." By Charles F. Mabery and H. H. Nicliolson. 



" On Orthoiodtoluolsulphonic Acid." By Charles F. Ma- 

 bery and George H. Palmer. 



