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Volume 1, Part 3, 1892; (1887) - (1893)

Front Matter

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Title Pages
Herbert Osborn

Research

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Some American Eruptive Granites p. 24-26
Charles Rollin Keyes

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Natural Gas and Oil in Iowa p. 15-18
Charles Rollin Keyes

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Iowa Mineralogical Notes p. 18-22
Charles Rollin Keyes

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Surface Disintegration of Granitic Masses p. 22-24
Charles Rollin Keyes

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Strata between Ford and Winterset p. 26-27
J. L. Tilton

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President's Address p. 35-42
C. C. Nutting

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Report of Committee on State Fauna p. 39-42
C. C. Nutting

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Phaenological Notes for 1892 p. 46-48
L. H. Pammel

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Notes on the Flora of Texas p. 62-76
L. H. Pammel

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Notes on Aphididae p. 98-101
Herbert Osborn and F. A. Sirrine

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Life Histories of Jassidae p. 101-103
Herbert Osborn

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The Fishes of the Cedar River Basin p. 105-112
Seth E. Meek

Back Matter

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Table of Contents p. 113-113