Front Matter
p. 0
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Hemin and Chlorophyll : the Two Most Important Pigments for Life on Earth
Rothemund, Paul pp. 193-202
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Macromia Alleghaniensis Williamson in Ohio with New Records of other Odonata in Ohio
Kormondy, Edward J. pp. 203-204
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Crataegus in Ohio with Description of One New Species
Palmer, Ernest J. pp. 205-216
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Book Notice
p. 216
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A Preliminary Survey of the Crane-Flies of Delaware County, Ohio (Diptera: Tipuloidea)
Foote, Benjamin A. pp. 217-229
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A Change in Editor of the Journal
p. 229
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An Unusual Case of Congenital Heart Anomaly in a Woman Aged Twenty-Five Years
Edwards, Linden F.; Eglitis, Irma pp. 230-236
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A Proportion Method for Sampling Spittlebug Populations
Weaver, C. R.; Whitney, D. R. pp. 237-244
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Annual Report of the Ohio Academy of Science 1956
pp. 245-255
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Back Matter
p. 999
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