288 PROCEEDINGS OF THE AMERICAN ACADEMY. 



The Recording Secretary declined to be regarded as a 

 candidate for re-election. 



The following papers were presented : — 



On the iodides of antimony, by Professor J. P. Cooke, Jr. 



On the chemical relations of pressure, by Professor T. S. 

 Hunt. 



On adiabatic surfaces, by Professor John Trowbridge. 



On the preparation of nitrogen gas, by Professor Wolcott 

 Gibbs. 



On diamido-sulphobenzide-dicarbonic acid, by Arthur 

 Michael and T. H. Norton, presented by E. N. Horsford. 



On paraiodbenzyl compounds, by Professor C. L. Jackson 

 and Mr. C. F. Mabery. 



On some new algse new to the United States, by W. G. 

 Farlow. 



Descriptions of new species of plants with synopses of cer- 

 tain genera, by Sereno Watson. 



The following paper was presented by title : — 



Characters of some new, or little known, genera of plants, 

 by Professor Asa Gray. 



The Corresponding Secretary presented the following 

 annual Report of the Council : — 



