OF ARTS AND SCIENCES. 395 



Seven hundred and forty-ninth Meeting:. 



February 8, 1882. — Monthly Meeting. 



The President in the chair. 



The chair announced the following deaths : — 



Lewis Henry Morgan, Dec. 17, 1881 ; Edward Reynolds, 

 Dec. 25, 1881 ; John William Draper, Jan. 4, 1882 ; Rich- 

 ard Henry Dana, Jan. 6, 1882 ; Theodor Schwann, Jan. 

 11, 1882. 



The following papers were presented : — 



" On a New Telephone." By A. E. Dolbear. 



" Conventionalism in Ancient American Art, Illustrated 

 by Specimens of Pottery from the Burial Mounds." By F. 

 W. Putnam. 



" On Interference Bands in Mapping Spectra." By C. E. 

 Kelley. (By invitation.) 



" On the Distribution of Energy among the Particles of a 

 Gas." By N. D. C. Hodges. 



The following papers were presented by Henry B. Hill by 

 title : — 



1. " Dibromacrylic Acid." 



2. " Dichloracrylic Acid." 



3. " Relations of Dibromacrylic Acid to Two Different Tri- 

 brompropionic Acids." 



4. " Certain Tetrasiibstituted Propionic Acids. 



5. " On the Constitution of the Substituted Acrylic Acids." 

 The following papers by Asa Gray were read by title : — 



1. " Studies of Solidago and Aster." 



2. " Novitice Arizonicce, &c. Characters of New Plants, 

 chiefly from Recent Collections in Arizona and Adjacent Dis- 

 tricts." 



Mr. Charles F. Mabery presented by title, 

 " Contributions from the Chemical Laboratory of Harvard 

 College." 



