1893.] Proceedings of Scientific Societies. 1033 
Professor R. Ramsay Wright, Professor of Biology, University of Tor- 
onto, Canada. The Origin of the Subterranean Animals of America, 
Professor A. S. Packard, Professor of Zoólogy and Geology, Brown 
University, Providence, R. I. The Ichthyology of the World's Col- 
umbian Exposition, Dr. Tarleton H. Bean, U. S. Fish Commission, 
Washington, D. C 
August 30.— The Zoological Museum, Mr. F. W. True, Curator of 
Mammals, U. S. National Museum, Washington, D. C. The History 
and Special Features of the Economic Entomology of the United 
States, Professor J. H. Comstock, Professor of Entomology and 
General Invertebrate Zoology, Cornell University, Ithaca, N.Y. The 
Special Problems of American Economie Entomology, Dr. C. V. 
Riley, Chief of the Division of Entomology, U. S. Department of 
Agriculture, Washington, D. C. The Ornithology of the World's 
Columbian Exposition, Dr. Frank N. Chapman, American Museum, 
Central Park, New York City. The Entomology of the World's 
Columbian Exposition, Professor H. E. Summers, University of 
Illinois, Champaign, Ill. 
August 31.—Undergraduate Courses and Post-graduate Methods in 
Zoology, Professor E. L. Mark, Hersey Professor of Anatomy, Har- 
vard University, Cambridge, Mass. Kinetogenesis, or the Relation of 
Motion to Organie Evolution, Professor E. D. Cope, Professor of 
Mineralogy and Geology, University of Pennsylvania, Philadelphia, 
Pa. Energy in Relation to Organie Evolution, Professor J. A. 
Ryder, Professor of Comparative Embryology, University of Pennsyl- 
vania, Philadelphia, Pa. Observations on the Loss of Weight in the 
Tadpoles of Amphibia Anura during the Period of Metamorphosis, 
Professor Lorenzo Camerano, R. Museo d' Anatomia Comparata, Turin, 
Italy. Mammalology and Mammalian Taxidermy at the World's 
Columbian Exposition, Professor L. L. Dyche, Professor of Compara- 
tive Anatomy, University of Kansas, Lawrence, Kas. 
September 1.—The Cellular Basis of Heredity. Prolene E. B. 
Wilson, Department of Biology, Columbia University, New York City. 
Continuity of Organization the Basis of Heredity, or the Organism and 
the Cell, Professor C. O. Whitman, Head Professor of Biology, Uni- 
versity of Chicago. Zoological Psychology and the Development of 
Mind, Professor C. Lloyd Morgan, Professor of Animal Biology in 
University College, Bristol, England. Zoological Nomenclature as a 
Means to a End, Dr. Elliott Coues, Washington, D. C. On Zoolog- 
ical Nomenclature, Dr. Charles Girard, Paris, France. 
