Q [February. 



The death of Dr. K. M. S. Jackson, at Chattanooga, 

 January 18, 1865, aged 51, was announced by the Secretary. 



The committee to which was referred the communication 

 by Mr. Lesquereux, for the Transactions, recommended its 

 publication, which was, on motion of Prof. Cresson, so or- 

 dered, and the committee discharged. 



Mr. Briggs made a communication to the Society on the 

 eifects of impure air on human health, and the supposed ne- 

 cessity of aqueous vapor to a perfect system of hot air 

 ventilation.* The subject was afterwards discussed by Prof. 

 Cresson, Dr. Coates, who referred especially to the experi- 

 ments of Dr. De La Roche with hot saturated air on animals, 

 and Dr. Wilcocks. 



Pending nominations, Nos. 524, 525, and 526, were read. 



The committee appointed January 6, to report on the Ma- 

 gellanic Premium, reported progress. 



And the Society was adjourned. 



Stated Meeting, February 17, 1865. 



Present, ten members. 



Mr. Peale in the Chair. 



Letters accepting membership were received from Mr. 

 Bost, dated La Force, January 23, 1865, and Prof. Winchell, 

 dated Ann Arbor, January 30, 1865. 



Letters of correspondence were received from the Russian 

 Observatory, the N. H. S. Moscow, the Royal Academies at 

 Stockholm and Leipsig, and the Royal Asiatic Society of 

 Great Britain and Ireland. 



Donations for the Library were received from the Russian 

 Observatory, the Societies at Leipsig, Stockholm, and Haar- 

 lem, the Asylums at La Force, the Royal Astronomical, 



* [See at the end of ISo. 73.— Sec. A. P. S.] 



