360 
RESEARCH COUNCIL PUBLICATIONS Proc. N. A. S. 
Medical Sciences 
The fermentation reactions of certain streptococci. XLII. Studies in bacterial 
metabolism. Investigation undertaken at the request of the Division of Medicine 
and Related Sciences, National Research Council. By Arthur I. Kendall, 
Alexander A. Day, Arthur W. Walker, and Marjorie Ryan. Reprinted 
from The Journal of Infectious Diseases, September, 1919, Vol. 25, pages 189-206. 
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On the morphology and mitosis of Chilomastix mesnili (Wenyon), a common flagellate 
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from the University of California Publication in Zoology, April 23, 1920, Vol. 20, 
pages 117-144. Distributed free, postage 2 cents. 
Observations on the toxicity of tetranitromethylaniline (tetryl), tetranitroxylene 
(T. N. X.), tetranitraniline (T. N. A.), dinitrodichlorbenzene (parazol) and 
metanitraniline. By H. Gideon Wells. June, 1920. Reprinted from the 
Journal of Industrial Hygiene, November, 1920, Vol. 2, No. 7, pages 247-252. 
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Psychology 
Army mental tests. Methods, typical results and practical applications. Washing- 
ton, D. C, November 22, 1918. Pages 23. Distributed free, postage 1 cent. 
The measurement and utilization of brain power in the army. By Robert M. Yerkes. 
Science, N. S., March 7, pages 221-226 and March 14, 1919, pages 251-259. 
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Mental tests in industry. By Robert M. Yerkes. Reprinted from the Bulletin 
of the American Institute of Mining Engineers, 1919, pages 405-419. No copies 
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BULLETIN OF THE NATIONAL RESEARCH COUNCIL 
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(To November, 1921) 
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Number 1. The national importance of scientific and industrial research. By 
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Number 2. Research laboratories in industrial establishments of the United States 
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