List of Exchanges . 
Oberlin, 0. 
Wilson Bulletin. 
Pasadena, Cal. 
Cooper Ornithological Club. 
Philadelphia, Pa. 
Academy of Natural Science. 
American Philosophical Society. 
Association of Engineering Societies. 
Franklin Institute. 
Philadelphia Commercial Museum. 
University of Pennsylvania. 
Pittsburg, Pa. 
Carnegie Museum. 
Portland, Me. 
Portland Society of Natural History. 
Poughkeepsie, N. Y. 
Vassar Brothers Institute. 
Providence, R. I. 
Roger Williams Park Museum. 
Ripon, Wis. 
Ripon College. 
Rochester, N. Y. 
Rochester Academy of Sciences. 
Rolla, Mo. 
^Missouri Geological Survey. 
Salem, Mass. 
Essex Institute. 
St. Louis, Mo. 
Academy of Science of St. Louis. 
Missouri Botanical Garden. 
San Francisco, Cal. 
California Academy of Sciences. 
Sioux City, Iowa. 
Academy of Sciences and Letters. 
