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Science, New Series, Vol. 107, No. 2786, May 21, 1948


Previous Issue: New Series, Vol. 107, No. 2785, May 14, 1948
Next Issue: New Series, Vol. 107, No. 2787, May 28, 1948


Front Matter (2 pp.)
The Developmental Physiology of Seed Plants, pp. 529-533
W. F. Loehwing


Obituary
Max Planck: 1858-1947, pp. 534-537
James Franck


News and Notes, pp. 537-542


Comments and Communications
The Informal Research Laboratory--A Proposal, p. 543
Chester Hyman
The Norton County, Kansas, Meteorite, p. 543
Lincoln LaPaz
A Proposed Petition to the International Commission on Zoological Nomenclature, pp. 543-544
Curtis W. Sabrosky; R. I. Sailer


Association Affairs
Pacific Division Meeting, p. 545
Resolution on Civil Liberties, p. 545
Request for Address Information, p. 545


Technical Papers
The Change in the Leucocytic Formula by the Leucocytosis-Promoting Factor of Exudates in Experimental Leucemia, pp. 546-547
Valy Menkin
Loss of Contractility of the Uterus and Partial Atrophy of the Uterus and Ovaries in Albino Rats Fed Choline-Deficient Diets, pp. 548-549
Marguerite Peet; Myra M. Sampson
Calcium Deficiency in Serpentine Soils as Revealed by Adsorbent Technique, p. 549
J. Vlamis; H. Jenny


In the Laboratory
Radioautograph Technique with C14, pp. 550-552
A. M. MacDonald; Jock Cobb; A. K. Solomon
A Method for Making Small Rubber Articles for Laboratory Use, p. 552
Albert E. Afford

Previous Issue: New Series, Vol. 107, No. 2785, May 14, 1948
Next Issue: New Series, Vol. 107, No. 2787, May 28, 1948



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