18 Societies, &c., with which R.D.S. Exchanges Publications. 
United States—continued. 
Philadelphia. 
Academy of Natural Sciences. © 
American Philosophical Society. 
Franklin Institute. 
University of Pennsylvania. 
St. Louis. 
Academy of Science. 
Salem (Mass.). 
Essex Institute. 
San Francisco. 
California Academy of Sciences. 
Geographical Society of California. 
Geographical Society of the Pacific. 
Topeka (Kansas). 
Kansas Academy of Science. 
Washington. 
Bureau of Education. 
Smithsonian Institution. 
Surgeon-General’s Office (United States Army). 
United States Coast and Geodetie Survey. 
United States Commission of Fish and Fisheries. 
United States Department of Agriculture. 
United States Geological Survey. 
United States National Museum. 
United States Naval Observatory. 
AMERICA (SOUTH). 
Argentine Republic. 
Cordoba. 
Academia Nacional de Ciencias. 
La Plata. 
Museo de la Plata. 
Brazil. 
Rio de Janeiro. 
Museo Nacional. 
Observatorio. 
S40 Paulo. 
Museu Paulista. 
