[ xvi ] 
United States (continued). 
Philadelphia. 
ab. Academy of Natural Sciences. 
ab. American Philosophical Society. 
p. Franklin Institute. 
p. Wagner Free Institute of Science. 
Rochester (N.Y.). 
p. Academy of Science. 
St. Louis. 
p. Academy of Science. 
Salem (Mass.). 
p. American Association for the Advance¬ 
ment of Science. 
ab. Essex Institute. 
San Francisco. 
ab. California Academy of Sciences. 
United States (continued). 
Washington. 
AB. Patent Office. 
ab. Smithsonian Institution. 
ab. United States Coast Survey. 
B. United States Commission of Fish and 
Fisheries. 
ab. United States Geological Survey. 
ab. United States Naval Observatory. 
p. United States Department of Agriculture. 
a. United States Department of Agriculture 
(Weather Bureau). 
West Point (N.Y.) 
ab. United States Military Academy. 
