1897.] Proceedings of Scientific Societies. 565 
gological Association, the American Surgical Association, the American 
Clinatological Association, the Association of American Physicians, 
the American Association of Genito-Urinary Surgeons, the American 
Orthopedic Association, the American Physiological Society, the Asso- 
ciation of American Anatomists, the American Pediatric Society, and 
the American Ophthalmological Society. At the meetings of these, 
held in various places, some three hundred and forty-one papers were 
read—obviously too many to be noted here. 
New York Academy of Sciences.—Section of Geology.—May 
17, 1897.—The first paper of the evening was by Mr. D. H. Newland, 
entitled “ Occurrence and Origin of the Serpentines near New York.” 
Mr. Newland spoke of the occurrence of the Serpentines in the vicinity 
of New York, and classified them according to origin intotwo probable 
divisions; one including those from New Rochelle and Hoboken, possi- 
bly derived from metamorphosed igneous rocks; and second, those 
from the other localities more probably derived from some form of 
sedimentary rock. 
The second paper of the evening was by Professor J. F. Kemp, enti- 
tled “ Notes on Butte, Montana, and it#Ore Deposits.” Professor Kemp 
described the geological position of the copper and silver bearing ore 
rocks of Butte, and illustrated his talk with a number of lantern slides 
made from photographs in the region last summer. He spoke particu- 
larly of the geological succession enhibited in the relationship of two 
forms of granite, an earlier basic and a later acitic, cut by later rhyolite 
flows. 
The third paper was by Professor Kemp, entitled “ Notes on the 
Geology of the Trail from Red Rock to and beyond Leesburg, Idaho.” 
This paper brought forth the first account known of the geology of 
about 100 miles of the trail mentioned, where the rocks are very varied 
in character, but mostly early Cambrian quartzites, together with many 
igneous rocks, including Tertiary rhyolites. The ore producing region 
is found in the valleys where the gravels are washed in some places by 
hydraulic force, and some gold obtained therefrom. 
The last paper of the evening was by Professor C. A. Doremus, and 
was illustrated by a series of specimens recently received from France 
from M. Moissan, representing certain of the metals and carbides 
formed by the electric furnace. Some of these were very interesting 
geologically, because af their peculiar properties ; particularly the car- 
nates of aluminum, calcium and cerium, which latter, when treated 
with water, produces all the gaseous series from marsh gas to the heavier 
39 
