Proceedings of the South Dakota Academy of Science, Volume - 6, Year - 1921.

TABLE OF CONTENTS  

AUTHOR NAME  

PAGE

Officers of the Academy  

4

Committees  

4

Minutes  

5

Papers:

South Dakota's Interest in Entomology.  

H. C. Severin  

7

The Undeveloped Possibilities of Electricity in South Dakota.  

J. W. Parmley  

32

Rare Minerals of the Black Hills as State Assets  

Joseph P. Connolly  

40

The Aluminum Content of Missouri River Shales.  

Freeman Ward  

54

The Missouri River Shales as a Source of Alumina and Aluminum.  

Arthur M. Pardee  

56

President's Address-The Present State of Religious Belief in South Dakota.  

Doane Robinson  

60

*A Proposed Method for the Standardization of Color Description in Soils.  

J. Gladden Hutton

On the Threshhold of Great Discoveries.  

L. E. Akeley  

65

Cultivation of Medicinal Plants.  

Anton Hogstad Jr  

76

Rhizoctonia, Corticium, or Scurf, a Serious Potato Disease in South Dakota.  

E. J. Petry  

82

Life Cycles of Trematode Worms.  

E. C. O'Roke  

85

Plants, New or Rare in South Dakota.  

John W. Moore  

92

The Crayfish.  

E. C. O'Roke  

93

*Read by title.