Front Matter
p. 0
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A Synopsis of the Genus Stenocranus, and a New Species of Mysidia (Homoptera)
Dozier, H. L. pp. 69-83
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The Homologies of the Tracheal Branches in the Respiratory System of Insects
Kennedy, Clarence Hamilton pp. 84-90
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Additions to the Catalog of Ohio Vascular Plants for 1921
Schaffner, John H. pp. 91-94
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Notes on the Food Habits of Young of Cottus Ictalops (Millers Thumb)
Turner, Clarence L. pp. 95-96
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Concretions in Lake Deposits at Elyria, Ohio
Hubbard, George D. pp. 97-98
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Preservation of Natural Conditions
Braun, E. Lucy pp. 99-100
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Back Matter
p. 999
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