1915.] 
NATURAL SCIENCES OF PHILADELPHIA. 
Exchanges. 
I. V. Williamson Fund 
United States Department of 
Agriculture 
American Entomological Society 
General Appropriation 
J. A. Meigs Fund. 
Authors. 
Editors . 
United States Bureau of Edu¬ 
cation. 
Pennsylvania Department of 
Agriculture. 
Queensland Department of 
__ Mines, Geological Survey 
New York Agricultural Experi¬ 
ment. Station 
Imperial Department of Agri¬ 
culture, British West Indies. 
Dr. Witmer Stone 
Pennsylvania Department of 
i Healt h 
Commission G6ologique de Fin- 
lande. 
Thos. B. Wilson Fund 
Dr. Henry Skinner 
United States Department of 
the Interior 
United States Department of 
Commerce and Labor 
Pan-American Union 
American Iron and Steel Insti¬ 
tute. 
National Academy of Sciences . 
United States War Department . 
Library of Congress 
Dr. Edward J. Nolan 
Department of Trade and Cus¬ 
toms, Australia. 
Sveriges Geologiska Under- 
sokning. 
New Mexico College of Agri¬ 
culture.'. 
Florida State Geological Survey. 
Topographic and Geologic Sur¬ 
vey of Pennsylvania. 
Department of Fisheries, Ben¬ 
gal, Bihar and Orissa. 
Geological Survey of New Jersey 
California Fish and Game Com¬ 
mission 
Pennsylvania State Library. 
Illinois State Geological Survey 
Estacion Seismologica de Car- 
tuja . . 
Argentine Government 
Commission of Conservation, 
(lanada. 
William J. Fox 
Seismological Society of America 
Indiana University 
Publication Committee of the 
Academy. 
Wisconsin Geological and Nat¬ 
ural History Survey. 
Pennsylvania Water Supply 
Commission 
Lowell Observatory 
Japan Society of America 
University of Tennessee. 
Michigan Geological and Bio¬ 
logical Survey 
Ella B. Altemus 
Central Seismological Station 
in Pulkow 
Bentham Trustees, Kew Gardens 
University of Wyoming 
Rockefeller Sanitary Institute 
for the Eradication of the 
Hook Worm 
American Institute of Electrical 
Engineers 
State Board of Charities, New 
York 
Government of India 
Washington Geological Survey. 
Wistar Institute of Anatomy . 
Pennsylvania Department of 
Forestry 
Pennsylvania State College 
Hervas Laboratory of American 
Linguistics. 
Observatorio Astronomico de 
Madrid. 
Dr. W. D. Bayley 
Goodsell Observatory 
Clarence B. Moore 
Editors of Entomological News 
Museum d’Histoire Naturelle de 
Havre 
Dr. Thomas Biddle 
James F. Wood 
Pennsylvania Chestnut Tree 
Blight Commission 
Warren Academy of Sciences. 
Iowa Geological Survey 
Charles H. Townsend 
Gouvernements Kina Onder- 
neming te Tjinjiroean (Ban¬ 
doeng). 
Government of Formosa. 
Colorado Museum of Natural 
History. 
Geological Survey of Alabama 
Connecticut Geological and 
Natural History Survey 
United States Brewers’ Associa¬ 
tion. 
Delaware Valley Ornithological 
Club 
Los Angeles County Museum 
of History, etc 
2,754 
1,825 
532 
298 
292 
136 
91 
77 
62 
33 
33 
31 
30 
24 
20 
18 
15 
15 
14 
14 
12 
12 
10 
8 
8 
8 
8 
8 
7 
7 
7 
7 
6 
6 
6 
5 
5 
5 
4 
4 
4 
4 
