Front Matter
p. 0
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An Unusual Occurrence of Stalactites and Stalagmites
Ver Steeg, Karl pp. 69-84
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Leafhopper Response to Colored Lights
Kelsheimer, E. G. pp. 85-94
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The Occurrence of Coal and Mica in Pleistocene Deposits Near Cincinnati
Brand, L. S. pp. 95-103
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The Daily Periodicity of Transpiration in the Tulip Poplar Liriodendron Tulipifera L.
Meyer, Bernard S. pp. 104-114
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Flower Production in the Lemnaceae
Hicks, Lawrence E. pp. 115-132
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The Relation of the Ant, Pogonomyrmex Occidentalis Cr., to its Habitat
Cole, Arthur C., Jr. pp. 133-146
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Sex in Arisaema Triphyllum
Camp, W. H. pp. 147-151
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Studies in Human Inheritance VII Hemophilia
Snyder, Laurence H. pp. 152-157
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Additions to the Catalog of Ohio Vascular Plants for 1931
Schaffner, John H. pp. 158-161
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Back Matter
p. 999
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