1886.) Proceedings of Scientific Societies. 999 
has caused an unprecedented migration, 15,000 settlers having 
located there during fifteen months. The range has been exposed 
for nearly sixty miles, cropping out on the surface of the moun- 
tains and disappearing to 250 feet below in the valleys. The 
depth of the ore in the valleys is explained by its soft texture, 
+ aga having swept it away, after which soil filled in and cov- 
ered it. 
— Messrs. J. B. Lippincott Company have in press a “ Manual 
of North American Birds,” by the eminent ornithologist, Profes- 
sor Robert Ridgway, curator, Department of Birds, Smithsonian 
Institution, Washington, D. C. The work is to contain some 435 
illustrations suitably executed, and will conform to the geograph- 
ical limits, classification, numeration and nomenclature adopted by 
the American Ornithological Union. We doubt not it will be one 
of the most important, thorough and original contributions to the 
literature of the subject which has ever appeared, and presume 
that naturalists and sportsmen alike will find in it an invaluable aid. 
— The output of the iron ore mines of the Lake Superior re- 
gion will be about 3,000 000 tons for the season of 1886, or one- 
third larger than in any other past year. 
:0: 
PROCEEDINGS OF SCIENTIFIC SOCIETIES. 
AMERICAN PHILOSOPHICAL Society, Dec. 18, 1885.—Professor 
Cope presented for the Transactions “A Chemical Study of Yucca 
angustifolia” by Miss H. C. de S. Abbott. : 
Jan. 1,-1886.—Professor Allen made a communication on the 
result of experiments on electric light used in photographing ani- 
mals in motion. : 
Professor Cope presented a paper on the Intercentrum of the 
Terrestrial Vertebrata; also another by Dr. Alfredo Dugés, ot 
Guanajuato, entitled “ Sur le Rhinocheilus antonii. ; 
an. 15.—Mr. Lesley read a paper on the evident Bedouin ori- 
gin of the Skedi deity in the Hebrew Scriptures, commonly trans- | 
lated “the Almighty.” He drew the conclusion that it bore a 
manifest relationship to the deity Sed introduced into Egypt and 
Palestine from Arabia. 
Mr. Lesley also communicated a revision of the section of the 
Le Roy (Chemung) beds in Bradford county, giving additions to 
the list of its fossils, and extending it downward nearly 350 feet, 
to include a rich horizon. 
r. Ashburner made a communication showing the course of 
the barometer during the storm of Jan. 8th. : 
Dr. Persifor Frazer spoke upon the application of composite 
photography to handwriting. 
Dr. H. Allen exhibited an example of Ch/lamydophorus trun- 
catis, 
VOL, Xx—wno, XI. 66 
