Front Matter
p. 0
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Observations on the Inheritance of Sex in Sciara Ocellaris (Diptera)
Davidheiser, Bolton pp. 89-102
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Book Notices
p. 102
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The Chemistry of Elements 93, 94, 95 and 96 (Neptunium, Plutonium, Americium and Curium)
Garrett, Alfred B. pp. 103-106
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The Genus Exitianus in North America Including Mexico (Homoptera: Cicadellidae)
DeLong, Dwight M.; Hershberger, Ruth V. pp. 107-116
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Book Notices
p. 116
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An Effect of Sub-Lethal Doses of Cryolite on Mexican Bean Beetle Larvae, Epilachna Varivestis
Wene, George P. pp. 117-118
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Provisional Paleoecological Analysis of the Devonian Rocks of the Columbus Region
Wells, John W. pp. 119-126
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Galvanotropic Responses of Paramecia to Balanced Square Waves
Miller, John A.; Goldston, Leo S. pp. 127-129
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New Zygnemataceae from Ecuador
Prescott, G. W. pp. 130-132
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Dioptrically Blind by Means of Electric Phosphenes
Barnard, Robert D. pp. 132-133
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A List of the Stoneflies, Plecoptera, Known to Occur in Southeastern Ohio
Walker, John D. pp. 134-136
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Back Matter
p. 999
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