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Volume 4, Annual Issue (1896)

Front Matter

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Title Page - Letter of Transmittal p. iii-iv
Herbert Osborn

General Interest Articles

Research

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The State Quarry Limestone p. 16-21
Samuel Calvin

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Vertical Range of Fossils at Louisiana p. 26-40
Charles R. Keyes and R. R. Rowley

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Natural Gas in the Drift of Iowa p. 41-47
A. G. Leonard

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Drift Section at Oelwein, Iowa p. 54-58
Grant E. Finch

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A Pre-Kansan Peat Bed p. 63-66
T. H. MacBride

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Summary of Discussion p. 66-68
S. Calvin

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New or Little Known Plants p. 108-108
T. J. Fitzpatrick

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The Nerve Cells of the Shark's Brain p. 151-153
Gilbert L. Houser

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The Illinois Biological Station p. 167-170
L. S. Ross

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Contributions to the Hemipterous Fauna of Iowa p. 172-234
Herbert Osborn and E. D. Ball

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Index p. 242-242