The minutes of the last meeting were read and approved. 



A paper by Mr. C.J. Reed, of Burlington, Iowa, on "The Gra- 

 phical Representation of the relation between Valence and Atomic 

 Weight," was read and explained by Dr. Chas. Luedeking. 



This paper together with a paper on ''The Specific Heats, Spe- 

 cific Gravities, and the Heats of Hydration of the Acids of the 

 Fatty Series and their mixtures with Water," by Dr. Charles Lue- 

 deking, and a paper by Prof, G. C. Broadhead on "Missouri 

 Geographical Surveys," were referred to the Committee on Pub- 

 lication. 



Prof. Wm. Trelease, of the Shaw School of Botany, of Wash- 

 ington University, was elected to associate membership, and Sr. 

 Angel Anguiano, Director del Observatorio Nacional de Mexico, 

 was elected to corresponding membership. 



After some informal remarks upon the contamination of the 

 water of surface wells by the excreta of men and animals, and 

 the ability of this water to propagate cholera germs, the Acad- 

 emy adjourned. 



November i6, 1885. 



The Academy met Monday evening, Nov. i6th, 1885, at the 

 Academy rooms, Vice Presid't Dr. Leete in the chair, and Messrs. 

 Moore, Sander, Seddon, Tivy, Pollak, Wheeler, Trelease, Evers, 

 Hambach, and Engler, present. 



The minutes of the last meeting were read and approved. 



The Academy acknowledged, with thanks, the receipt of "A 

 Sanitary Survey of St. Louis, 1884," presented by Mr. Robert 

 Moore ; "Autobiography and Reminiscences of the late August 

 Fendler, edited by Wm. M. Canby," presented by Mr. G. W. 

 Letterman. 



Upon the recommendation of the Corresponding Secretary, the 

 *' Elliott Society of Science and Art," Charleston, S. C, was 

 placed upon the exchange list of the Academy. 



Mr. Wheeler called attention to a new locality for the rather 

 rare and usually sparingly-found mineral known as Pickeringite, 

 or natural magnesian alum. At Castle Valley, Utah, it was found 

 by him in I882, in seams several inches thick, in the lignite-coal 

 beds of that region. He also called attention to the quaquaversal 



