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Science, New Series, Vol. 52, No. 1344, Oct. 1, 1920


Previous Issue: New Series, Vol. 52, No. 1343, Sep. 24, 1920
Next Issue: New Series, Vol. 52, No. 1345, Oct. 8, 1920


Front Matter (1 p.)
Scientific Research in Relation to Agricultural Problems, pp. 301-307
W. P. Thompson

Limitations of Experiment in Explaining Natural Habit, as Illustrated by the Diurnal Migration, pp. 307-310
Calvin O. Esterly


Scientific Events
The British National Physical Laboratory, p. 310
The Fairport Fisheries Biological Station, pp. 310-311
Expeditions of the Bishop Museum, p. 311


Scientific Notes and News, pp. 311-313
University and Educational News, pp. 313-314


Discussion and Correspondence
Electricity and Gravitation, pp. 314-315
H. Bateman
Protozoa in Sawdust for Class Work, p. 315
C. W. Stiles


Concerning Diastrophism, pp. 315-318
Edward W. Berry


Special Articles
The Influence of Dry Versus Fresh Green Plant Tissue on Calcium Assimilation, p. 318
E. B. Hart; H. Steenbock; C. A. Hoppert


The American Chemical Society, pp. 319-322
Charles L. Parsons

Back Matter (1 p.)

Previous Issue: New Series, Vol. 52, No. 1343, Sep. 24, 1920
Next Issue: New Series, Vol. 52, No. 1345, Oct. 8, 1920



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