1915.] 



NATURAL SCIENCES OF PHILADELPHIA. 



575 



Exchanges 2,754 



I. V. Williamson Fund 1,82.5 



United States Department of 



Agricult ure 532 



American Entomological Society 298 



General Appropriation 292 



J. A. Meigs Fund 136 



Authors 91 



Editors 77 



United States Bureau of Edu- 

 cation 62 



Pennsylvania Department of 



Agriculture 33 



Queensland Department of 



M ines, Geological Survey 33 



New York Agricultural Experi- 

 ment Station 31 



Imperial Department of Agi-i- 



culture, British West Indies 30 



Dr. Witmer Stone 24 



Pennsylvania Department of 



^ Health 20 



Commission Geologique de Fin- 



lande 18 



Thos. B. Wilson Fund 15 



Dr. Henry Skinner 15 



United States Department of 



the Interior 14 



United States Department of 



Commerce and Labor 14 



Pan-American Union 12 



American Iron and Steel Insti- 

 tute 12 



National Academy of Sciences. ... 10 



United States War Department.. 8 



Library of Congress 8- 



Dr. Edward .1. Nolan 8 



Department of Trade and Cus- 

 toms, Australia 8 



Sveriges Geologiska Under- 



sokning 8 



New Mexico College of Agri- 

 culture 7 



Florida State Geological Surve}\- 7 

 Topographic and Geologic Sm- 



vey of Pennsylvania 7 



Department of Fisheries, Ben- 

 gal, Bihar and Orissa 7 



Geological Survey of New Jersey 6 

 California Fish and Game Com- 

 mission 6 



Penn.sylvania State Library 6 



Illinois State Geological Survey. . 5 

 Estacion Seismologica de Car- 



tuja-: 5 



Argentine Government 5 

 Commission of Conservation, 



Canada 4 



William J. Fox 4 



Seismological Society of America 4 



Indiana University 4 



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 



Bent ham Trustees, Kew Gardens 



University of Wyoming 



Rockefeller Sanitary Institute 

 for the Eradication of the 

 Hook \^"orm 



American Institute of Electrical 

 Engineers 



State Board of Charities, New- 

 York 



Government of India 



Washington Geological Survey... 



Wistar Institute of Anatomy 



Pennsylvania Department of 

 Fore.stry 



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 

 HLstory 



Geological Survey of Alabama 



Connecticut Geological and 

 Natural History Survey 



United States Brewers' Associa- 

 tion 



Delaware Valley Ornithological 



Club ; 



Los Angeles County Museum 

 of Historv, etc 



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