JANUARY, 1953
47
from experiments1 evidence. The volume is informative, good training in logic, presents examples t o emulate, and indicdes the mobility of thought required in a science. For smsll or selected classes with a close relationship between instructor and student or for the seminar type of presentation, this book would be excellent and adequate for a text. The chronological arrangement shows the trend in theoretical chemical thought in such a way as t o be fascinating for any chemist. VIRGINIA BARTOW
MODERN CHEMICAL PROCESSES. VOLUME II
0
By the Editors of Industrial a n d Engineering Chemistry and technical staffs of cooperating organirntions. Reinhold Publishing Cop., New York, 1952. v 299 pp. Illustrated. 21 X 2 9 cm. $5.M).
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SWCEFebruary, 1948, one of the editors of industrial and Engineering Chemistry has cooperated with the technical staff of an industrial organization to describe comprehensively a new plant or process, replete with excellent illustrations and flowsheets. In Volume I of this series were collected the 23 articles appearing in 1948 and 1949. In Volume I1 are the 24 articles appearing in 1950 and 1951. Of these, six describe inorganic processes and 18 describe organic processes (of which four are biochemical processes). The processes range from "reagent grade chemicals" through "pioneer surfactant" to "brewind' and "modern winemaking!' Some articles, like "calcium cyanamide," represent the first authoritative description given of an older industry and its moderni~ation. Others, like "magnesia-base sulfite pulping," are the &st complete technical description of a new process seeking ta revolutionize the industry. Because of the close cooperation between the editorial representative and the company representatives the articles are always well written, well illustrated and authoritative. The articles in the book are not arranged in the sequence in which they appeared in Indust~ial and Engineering Chemistry. I t would be helpful to have beneath the title the I.E.C. reference for those who wish to quote the reference. "Modern Chemical Processes" will save much wear and tear on I.E.C. and for itself merits n place among the texts on chemical technology. EENNETR A. KOBE U ~ ~ v m ; a sor mT ~ sxm AOBTIN. TEXU
0
UNIT PROCESSES IN ORGANIC SYNTHESIS
Editor-in-Chief. Chemical Eoineer. U. S. Department of Agriculture. ~ourthEdihon. ~ c ~ ; a w . ! &Book U Co.. Inc., New York, 1952. xiii T 937 pp. ILlusbated. I 5 X 2 3 cm. $12.50.
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TIIEa p p w m w of B fourth edition of thii book ouly five ycwa after the third crlition atteets to lboth tllc importunre of drvcl
