Front Matter
p. 0
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Selective Factors in Human Survival
Hefner, R. A. pp. 225-230
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Book Notice
p. 230
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Comparative Effectiveness of Five Radiosotopes as Tracers in Studying Dispersal of Conotrachelus Nenuphar (Hbst.)
Rings, Roy W. pp. 231-236
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Invertase Activity in Adult Aedes Aegypti Mosquitoes
Fisk, Frank W.; Shambaugh, George F. pp. 237-239
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Book Notice
p. 239
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Deletion of the Systemic Arches and Evolution of the Aortic Arch System in Birds
Glenny, Fred H. p. 240
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An Unusual Pearl from a Freshwater Mussel and a Pearl-Like Growth from a Crayfish
Dexter, Ralph W. pp. 241-242
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Some Eocene Dicotyledonous Woods from Eden Valley, Wyoming
Kruse, H. O. pp. 243-268
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Book Notice
p. 268
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Recent Changes in the Industrial Development of Newark, Ohio
Harris, William N. pp. 269-273
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Marital Status as a Categoric Risk in Major Mental Disorders
Frumkin, Robert M. pp. 274-276
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A Survey of the Helminth Parasites of Fishes from Van Buren Lake and Rocky Ford Creek
Krueger, Russell F. pp. 277-279
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Book Notice
p. 279
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A New Ohio Locality Record for the Gilled Oligochaete Branchiura Sowerbyi
Strecker, Robert L. p. 280
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Book Notice
p. 280
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Annual Report of the Ohio Academy of Science 1954
pp. 281-286
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Necrology Report for 1953-1954
pp. 286-287
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Back Matter
p. 999
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