1881.] Proceedings of Scientific Societies. Sit) 
for finding the proximities of the orbits of minor planets,” by C. 
H. F. Peters: “ Structure of the wings of insects, studied palzon- 
tologically,” by Samuel H. Scudder; “ Biographical memoir of 
S. S. Haldeman,” by J. P. Lesley ; “ On the auriferous gravels of 
California,’ T. Sterry Hunt; “ On the utilization of the sun’s rays 
in heating and ventilating,” by Edw. S. Morse; “Results just 
obtained with regard to the molecular height of hydro-fluoric 
comb was elected home secretary, and Professor J. H.C. Coffin, 
United States Navy, treasurer. 
New York Acapemy or Sciences, New York, March 28.— 
The following papers were read: Notes on the fauna and flora of 
the gorilla region, Equatorial West Africa, by Mr. Hugo von 
Koppentels ; On the occurrence of Helix aspersa (European) in 
California, and the geographical distribution of certain West 
American land-shells, etc., by Mr. Robert E. C. Stearns. 
A\pril 4—Mr, N. L. Britton read a paper on the geology of 
Richmond county (Staten Island), N. Y. ae 
April 11.—The following paper was read: On the building and 
©rnamental stones used in New York, with illustrations of their 
sucroscopic structure, as shown in the lantern by polarized light, 
y Mr. Alexis A. Julien, 7 
