HOWARD T. BONNETS OCTAVIA CHAPIN F. B. D A ~ N S L. DAVIS HOWARD G RAHAM CLIPFORD HENDRICKS
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ABSTRACTS R. A. BAKER, Abstract Editor D. C. LICHTENWALNER
KATHERINE S. HOLMES
J. W. HOWARD
GRETA OPPE
C. M. P n u m LEOPOLD SCHEFLAN GEO. W. SEARS
B. D. THOMAS E. ROGER W A S H B ~ N G. H. WOOLLRTT
KEEPING U P WITH CHEMISTRY The technical production of protactinium. G. GRAUEAND H. K ~ D I N GZ. . angm. Chm.. 41, 65W3 (Scpt. 15. 1934);-A description of the technical production af protactinium from the dry residues of the radium manufacture a t Joachimstal. L. S. Vistra. W. E L L E ~ .Ckm.-Ztg., 77,809-12 (Oct. 6,1934).-A detailed discussion of the history, chemistry, and properties of this new artiilcial textile material used in Germany, accompanied L.S. by illustrations and curves. Intermediate products of the coal-tar dye industry. See this title under "Scientific Reviews and Bibliomaphies: . . . Tabulations of Scientific Data." The industrial manufacture of synthetic waxes, artificial waxes,
ahout 1500°F., and then quickly cooled hy means of an air jet. steam jet, or immersion in oil a t npproximxtuly 40uCF. The rwult is that the r\tcriur i;%yrris quickly solidified, while the interior, cooling a t :+ slower rat
