208 Proceedings of Scientific Societies. { February, 
Davis, W. M. Geological sections illustrating rate of deposit and thickness of 
formations 
Whitman, C. O. Osmic acid and Merkel’s orgs in embryological research. 
Farlow, W. G. Teaching biology at colle 
eya W. M. On the use of models for instruction in eee” 
. S. Some improvements in histological tec 
Goals G. L. Exhibition of botanical a ar pR 
AMERICAN PHILOSOPHICAL Society, May 1, 1885.—Dr. H. 
Allen made a communication on the tarsus of bats, etc. 
May 15.—Professor H. C. Lewis presented an account of the 
great trap-dyke across S. E. Pennsylvania. 
June 19.—Dr. A. S. Gatschet presented a paper on the Beet- 
heek Indians, with a vocabulary. Professor Cope presented a 
second continuation of researches among the Batrachia of the 
coal regions of Ohio; also a paper by Dr. A. C. Stokes, of New- 
ton, N. Y., on some new hypotrichous Infusoria. 
July 17. Professor D. Kirkwood, of Bloomington, Indiana, pre- 
sented a communication on the comet of 1866 and the meteors of 
November 14. 
October ee F. A. Genth presented contributions from the 
laboratory of the University of Pennsylvania, xx1v—contributions 
to mineralogy. Dr. D. G. Brinton presented Polysynthesis and 
incorporation as characteristics of American languages. Dr. 
F. S. Kraus (Vienna) sent in a paper entitled Aus Bosneen en 
Herzegovina. Professor E. D. Cope presented a catalogue of the 
species of Batrachia and reptiles contained in a collection made at 
Pebas, Upper Amazon, by Mr. Hawkwell. 
Oct. 16.—Professor Cope presented for the Transactions a paper 
on the species of Iguanide; and also for the Proceedings (1)a 
paper on the structure and affinities of the species of fishes from 
the Eocene of Wyoming Territory ; (2) a report on the coal de- 
posits near Zaculatipan, Hidalgo, Mexico ; (3) an account of the 
structure of the brain and auditory apparatus of a theromorphous 
reptile. 
Professor Houston made a statement as to the effect of the late 
explosion of 285,000 pounds of dynamite at Flood Rock, Hell 
Gate, N. Y., stating that in his opinion earthquakes were pro- 
duced by the cooling of a heated surface. 
November 20.—Dr. Brinton presented a paper on the Mangue 
language. 
Professor Cope sent in a 13th contribution to the herpetology 
of rere America. 
sor Houston sent a communication upon photography ina 
miere flash during fh the storm of October 29, 1885, and ex- 
hibited the negatives and photc 
_ Dr. Frazer r presented a a résumé of the proceedings ofthe recent In- 
t Berlin, which he had attended 
asa delegate from the — Association for the Advance- 
ment of Science, with other American scientists, Dr. Frazer 
