Exchanges. xxiii 



United States — Continued. 

 Minneapolis (Minn.). 



Geological and Natural History Survey of Minnesota. 



Minnesota Academy of Natural Science. 

 Mount Hamilton (Cal.). 



Lick Observatory. 

 New Brighton (N. T.). 



Natural Science Association of Stateo Island. 

 New Brunswick (N. J.). 



Agricultural Experiment Station. 

 New Haven (Conn.). 



11 American Journal of Science." 



Connecticut Academy of Science. 



Yale University Astronomical Observatory. 



Yale Universit3 r Library. 

 New York (N. Y.). 



Academy of Science. 



American Geographical Society. 



American Museum of Natural History. 



Botanical Garden. 



Chemical Society. 



Linnaean Society of New York. 



Mathematical Society. 



Public Library. 



Torrey Botanical Club. 

 Northfield (Minn.). 



Carleton Coll-ge Observatory. 

 Oberlin (0.). 



Oberlin College Library. 

 Pasadena (Cal.). 



Academy of Sciences. 

 Peoria (III). 



Scientific Association. 

 Philadelphia (Pa.). 



Academy of Natural Science. 



American Entomological Society. 



American Philosophical Society. 



Commercial Museum. 



"Journal of Comparative Medicine and Surgery." 



" Journal of Pharmacy." 



Library Company. 



Numismatic and Antiquarian Society. 



