Proceedings of the South Dakota Academy of Science, Volume - 20, Year - 1940.

TABLE OF CONTENTS  

AUTHOR NAME  

PAGE

Twenty-fifth Annual Meeting  

  

4

Business Session  

  

4

Membership List  

  

8

In Memorium -

Harry Victor Atkinson  

  

10

Joseph Gladden Flutton  

  

12

Program  

  

16

Environments and Life DeveIopments--Preridential Address  

Walter V. Searight  

19

Decomposition of Selenium-Cystine in Electrodialysis and Acid Hydrolysis.  

Alvin L. Moxon and Arnold E. Schaefer  

28

pH Values of the Contents of the Gastro-Intestinal Tracts of Some Farm Animals.  

Oscar E. Olson  

34

The Basicity of Water.  

L.S.Gurs  

42

Teaching Water Analysis.  

A.R. Kendall  

46

The Postnatal Development of the Young Striped Gopher or Ground Squirrel, Citellus Tridecemlineatus (or Petunia's Progeny).  

Thelma S. Erickson  

49

Vitamin D Deficiency in the Rat.  

T.  H. Sattler, H. Margulies, and H. D. McEwen  

53

Magnetic Map of South Dakota Based on Data Taken by the United States Coast and Geodetic Survey.  

W. H. Jordan  

58

A Comparison of the Relative Values of Two Methods of Teaching Laboratory Work in High School Cbemistry.  

ArnoId L. Stietjes and Arthur M. Pardee  

61

The Effect of a Potassium-Low Diet on the Survival Time of Adrenalectomized Rats.  

Donald L. Alcott and H. Douglas McEwen  

70

The Use of Kodachrome Slides in Teaching Biology.  

Leon C. Snyder  

74

Sand and Gravel Deposits in South Dakota.  

Harold Buus  

75

The Linkage Relations of Sex Factors to Two Adjacent Mutant Factors.  

Raymond J. Greb and Magnhild T. Greb  

79

The Ability of Certain Common Trees to Withstand Drought in Southeastern South Dakota.  

Harold I. Maggrett  

84

Protocols for Dilution Series Based on Geometrical Progressions.  

Edwin H. Shaw, Jr  

91

Nitrate Content of Some South Dakota Plants.  

Oscar E. Olson and Eugene Whitehead  

96

Suggestions for Making and Filing Microfilm Records.  

John K. Edwards  

102

The Relationship Between Logic and Psychology.  

H.R. Fossler  

l08

The Adsorption of Selenate and Selenite Selenium by Colloidal Ferric Hydroxide.  

Oscar E. Olson and Curtis W. Jensen  

115

Intermediates Between Fertile and Sterile Shoots in Equisetum Arvense.  

John K. Edwards  

122

The Goldenrods of South Dakota.  

Anna V. Bray, Orlin Biddulph, and H. Clyde Eyster  

124

The Synthesis of Vitamin C by the Dairy Cow.  

G.  C. Wallis  

128

Oxygen Consumption in Male and Female Fly Drosophila Melanogaster.  

William G. Kucera  

131