Presidential Address

The Doctrine of Levels Applied to the Sciences

Charles M. Perry

9-13

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Invited Address

The Promise and Prospect of the South

Howard Odum

15-22

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Biological Sciences

Effect of Unilateral Ovariectomy on Pregnancy, Litter Size and Lactation in the Albino Rat

Carl A. Bunde

23-25

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Brachydactyly and Syndactyly in Ptilopod Domestic Fowl, Gallus domesticus

R. Geo. Jaap

27-29

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Wildlife and Roadside Erosion in Central Oklahoma

Chas. C. Smith

31-35

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Observations on the Effects of Erosion on the Ecology and Maintenance of an Artificial Lake in Logan County, Oklahoma

Roy W. Jones

37-38

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A New Record of Bufo punctatus in Murray County, Oklahoma

Roy W. Jones

39

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Observations on the Natural History of Bufo cognatus

Arthur N. Bragg

41-42

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A Fall Survey of the Fishes of the Stillwater Creek Drainage System

Geo. A. Moore

43-44

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The Identification of the Species of Phyllopoda of Oklahoma and Neighboring States

J. G. Mackin

45-47

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A Preliminary Study of the Oaks and Hickories of Oklahoma

Milton Hopkins

49-51

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Calopogon pulchellus and its Habitat in Oklahoma

O. M. Clark

53

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The Genus Sisyrinchium in Oklahoma

Paul Smith

55-56

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Preliminary Studies on the Genus Monarda in Oklahoma

Dorothy Henson

57-58

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A New Station for Polyporus obtusus Berk

Susann Fry

59

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The Flowering Behavior of the Hollyhock (Althea Rosea Cav.)

Robert Stratton

61-64

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The Effect of Light, Gravity, and Centrifugal Force on Buckwheat Seedlings

James M. Smith

65-67

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Two Species of Mammals from Cimarron County New for Oklahoma

H. D. Chase

69

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The Insect Record for Oklahoma, 1938

F. A. Fenton

71-77

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The Nectar Flow at Stillwater During 1938 as Indicated by a Scale Colony of Bees

G. A. Bieberdorf

79-80

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Overwintering of Aedes aegypti in Stillwater

L. E. Rozeboom

81-82

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A Report on the Influence of Overgrazing on the Acrididae

Wallace R. Coyner

83-85

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Biology and Control of Phyllophaga lanceolata in Oklahoma

F. A. Fenton

87-91

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European Insect Outbreaks as Population Fluctuations

J. Richard Carpenter

93

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The Effect of Overgrazing on Insect Populations

A. O. Weese

95-99

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Airplane Spore Traps for Studying the Annual Migration of Wheat Rust

K. Starr Chester

101-104

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The Morphology of Pollen Tubes in Angiosperms

O. J. Eigsti

105-107

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Preliminary Note on the Production of Motile Cells in Basicladia crassa

Dorothy Van Dyke Leake

109-110

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A Method of Comparing Climatic Conditions in Different Localities

Charles A. Shull

111-112

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Geological Sciences

Foraminifera from the Grayson Formation (Lower Cretaceous) of Texas

Helen Tappan

113

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Zeolitic Rocks in the Wichita Mountains

C. A. Merritt

115-117

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Stream Erosion in Western China

C. L. Foster

119-120

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General Classification of Pennsylvanian Rocks in Oklahoma

Robert H. Dott

120

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Phosphate Deposits as Stratigraphic Markers

M. C. Oakes

121-123

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Progress Report on Wave Tank Studies at the University of Oklahoma

O. F. Evans

125-126

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Physical Sciences

Angular Constants of Microcrystalline Profiles and Silhouettes in the Conclusive Identification of Substances IV.

A. C. Shead

127-129

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Evaporation Process of Aluminizing Optical Surfaces

William M. Craig

131-132

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Social Sciences

The Corporate Dimension of Democracy

Glenn Negley

133-135

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Implications of Social and Economic Planning from the Viewpoint of Economic Geography

M. F. Burrill

137-139

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Some Implications of Problems of Regional Control from the Perspective of Political Science

Loren N. Brown

141-143

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Economic Planning in the South in the Light of Philosophy and Education

N. Conger

145-148

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Can the Federal Reserve System Stabilize Prosperity?

Howard O. Eaton

149-151

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Secret Diplomacy in a Democracy: Sir Edward Grey

Edward F. Willis

153-154

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A Study of War Attitudes

S. L. Reed

155-156

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Measuring the Ability to Judge Poetry

Melvin Rigg

157-158

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The Place of Conservation in the Curriculum

Edward E. Keso

159

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Conservation in the Sixth Grade

N. N. Duncan

161

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Objectives of a General Physical Science Course

Herman Roth

163-166

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Some Suggested Projects for the Superior "Problem Child" in High School Biology

Roy W. Jones

167-168

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Photography as an Aid in Teaching Nature Study

A. M. Winchester

169

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