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Science, New Series, Vol. 94, No. 2449, Dec. 5, 1941


Previous Issue: New Series, Vol. 94, No. 2448, Nov. 28, 1941
Next Issue: New Series, Vol. 94, No. 2450, Dec. 12, 1941


Front Matter (12 pp.)
The Significance of Choline as a Dietary Factor, pp. 523-527
C. H. Best


The American Association for the Advancement of Science
Preliminary Announcement of the Dallas Meeting: II, pp. 527-533
F. R. Moulton


Obituary
Charles Pecher, p. 533
John H. Lawrence
Deaths and Memorials, pp. 533-534


Scientific Events
Atkins Institution of the Arnold Arboretum, p. 534
Symposia on Equine Encephalomyelitis and Mosquito Control, pp. 534-535
Awards of the American Society of Mechanical Engineers, pp. 535-536
The Twentieth Anniversary of the Psychological Corporation, p. 536


Scientific Notes and News, pp. 536-538


Discussion
Nicotiana Rustica in New Mexico, pp. 538-539
E. G. Beinhart
A Note on the Determination of Thiamine by the Yeast Fermentation Method, p. 539
C. V. Smythe
Exceptional Burial in California, pp. 539-540
Phil C. Orr
Higgins Versus Higbee, p. 540
E. Alfred Wolf


Quotations
German Persecutions in Poland, pp. 540-541


Scientific Books
The Electric Spark, p. 541
The Mechanism of the Electric Spark
Leonard B. Loeb; John M. Meek
Review author[s]: Serge A. Korff
Meteorology, pp. 541-542
Dynamic Meterology
Bernhard Haurwitz
Review author[s]: W. M. Elsasser


Special Articles
The Effect of Increased Pantothenic Acid in the Egg on the Development of the Chick Embryo, pp. 542-543
Alfred Taylor; Juanita Thacker; Dorothy Pennington
The Phenomenon of Thixotropy in Hemophilic and Heparinized Blood, pp. 543-544
Alfred Lewin Copley
The Effect of Pyridoxine on the Urinary Excretion of a New Fluorescent Substance, p. 545
S. A. Singal; V. P. Sydenstricker


Scientific Apparatus and Laboratory Methods
A New Technic for Staining Vaginal Smears: III, a Single Differential Stain, pp. 545-546
Ephraim Shorr
A Device for the Preparation of Hydrosulfite Solutions for Gas Analysis, p. 546
Laurence G. Wesson


Science News, pp. 10+12
Back Matter (2 pp.)

Previous Issue: New Series, Vol. 94, No. 2448, Nov. 28, 1941
Next Issue: New Series, Vol. 94, No. 2450, Dec. 12, 1941



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