NATURAL SCIENCES OF PHILADELPHIA. 
797 
1901.] 
K. Akademie der Wissenschaften. Berlin. 
Abhandlungen. 
Sitzungsberichte. 
K. Akademie der Wissenschaften. Wien. 
Commission fur oceanographische Forschungen. 
Denkschriften. 
Mittheilungen der prahistorischen Com mis sion. 
Sitzungsberichte math.-naturw. Klasse. 
Albany Institute. Albany. 
Transactions. 
Allgemeine Zeitschrift fur Entomologie. Neudamm (E. S.). 
American Academy of Arts and Sciences. 
Memoirs. 
Proceedings. 
American Association for the Advancement of Science. Salem. 
Proceedings. 
♦American Anthropologist. New York. 
American (The) Antiquarian. Chicago. 
American Antiquarian Society. Worcester. 
Proceedings. 
American Chemical Journal. Baltimore. 
American Chemical Society. Easton. 
Journal. 
American Climatological Association. Philadelphia. 
Transactions. 
American Entomological Society (Entomological Section of the Academy). 
Philadelphia. 
Transactions. 
Entomological News. 
American Geographical Society. New York. 
Bulletin. 
♦American (The) Geologist. Minneapolis. 
American Institute of Mining Engineers. New York. 
Transactions. 
♦American Journal of Anatomy. Baltimore. 
American Journal of Pharmacy. Philadelphia. 
♦American (The) Journal of Physiology. Boston. 
American Journal of Psychology. Worcester. 
American (The) Journal of Science. New Haven. 
American Journal of Mathematics. Baltimore. 
American (The) Monthly Microscopical Journal. Washington. 
American Museum of Natural History. New York. 
Annual Reports. 
Bulletin. 
Memoirs. 
American Naturalist. Cambridge. 
American Ornithologists’ Union. New York. 
The Auk. 
