Presidential Address

A Challenge to the Social Sciences

Herbert Patterson

9-10

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Biological Sciences

Notes on the Further Extension in Range of the American Magpie in the Oklahoma Panhandle

R C Tate

10

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Two Lampreys from Oklahoma

G A Moore

11

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Ephedra antisiphilitica Meyer, Establishing Another Order of Plants for Oklahoma

Fred A Barkley

11-12

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Cystine Content of Sheep Wool As Affected by the Protein Content of the Diet

Janet Long

12-16

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The Nutritive Value of the Pinto Bean in the Diet of Mexican Children

Helen B Burton

16-18

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Picric Acid as a Destaining Agent for Iron Haematoxylin on Animal Tissue

George A Moore

18

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The Annelids of a Marine Sere

A O Weese

18-21

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Geological Sciences

The Glacial Anticyclone as a Factor in the Extension of Pleistocene Ice Sheets

O F Evans

22

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Efficiency of Recovery of Gas and Oil in the Graham Pool, Carter County, Oklahoma

C W Tomlinson

22-24

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Further Studies on the Origin of the Sandy Land Along the Cimarron River in Oklahoma

Horace J Harper

24-27

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Significance of the Graptolites of Oklahoma

C E Decker

27-29

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The Union Valley Sandstone Member of the Wapanucka Formation

R V Hollingsworth

29-30

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Doctor Ulysses S. Grant

Charles E Decker

30

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Physical Sciences

Viscosity of Pyridine-Acetic Acid Mixtures

Lilah Bell Heck

31

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A Laboratory Experiment on the Measurements of Mass and Force by a Kinetical Method

Mary Louise Kropp

31-33

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The Use of Ethyl Sulfone-bis-Acetate in the Identification of Aliphatic Amines

John P Alden

33

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The Colorimetric Method for the Direct Determination of Sodium

O M Smith

33-35

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The Behavior of the Photoelectric Threshold of Cadmium Films

J M Schmidt

35-36

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An Apparatus for the Study of X-Ray Satellites in the Region of 5 A°

Ralph D Lynn

36-37

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On the Theory of a Broad-Crested Weir

Nicholas M Oboukhoff

38

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Social Sciences

Higher Education of Oklahoma City Negroes

Harvey C Hansen

38-40

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Recent Changes in the Size of the Farm Population in Oklahoma

O D Duncan

40

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