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Science, New Series, Vol. 72, No. 1868, Oct. 17, 1930


Previous Issue: New Series, Vol. 72, No. 1867, Oct. 10, 1930
Next Issue: New Series, Vol. 72, No. 1869, Oct. 24, 1930


Front Matter (4 pp.)


The British Association for the Advancement of Science
A State Experiment in Chemical Research, pp. 379-390
G. T. Morgan


Obituary
Recent Deaths, pp. 390-391
Memorials, p. 391


Scientific Events
The British Geological Museum, pp. 391-392
The Great Smoky Mountains National Park, pp. 392-393
The Scott Fund Expedition to Montana, p. 393
The George Fisher Baker Non-Resident Lectureship in Chemistry at Cornell University, pp. 393-394


Scientific Notes and News, pp. 394-396


Discussion
Yardang and Zastruga, pp. 396-397
Eliot Blackwelder
What is Chitine?, p. 397
Wm. T. M. Forbes
Topographic Control of Cloud Distribution, pp. 397-398
R. J. Holden
Twin Seedlings in Angiosperms, p. 398
Robert H. Woodworth
Mineral Resources of Greece, p. 398
Maurice H. Bigelow


Scientific Apparatus and Laboratory Methods
A Practical Method of Determining the Fall in Potential in a Microelectrophoresis Cell, pp. 398-399
Jas. Gibbard
The Measurement of Arm Girth, p. 399
H. T. Manuel


Special Articles
The Logistic Curve and the Census Count of 1930, pp. 399-401
Raymond Pearl; Lowell J. Reed
Lignin as a Possible Factor in Lodging of Cereals, pp. 401-402
Jehiel Davidson; Max Phillips


The National Academy of Sciences. II, pp. 402-408
Books Received, p. 408
Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 72, No. 1867, Oct. 10, 1930
Next Issue: New Series, Vol. 72, No. 1869, Oct. 24, 1930



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