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ABSTRACT THE author of this book points out in the preface that it is not written for the scientific specialist, but “for the teacher and student, for the business man and banker.” The book
deals first with the sources of nitrogen and the need for its fixation from the atmosphere, and then considers in detail the arc process, the cyanamide process, the direct synthetic ammonia
process, and ammonia conversion products. The material is well presented, and is especially valuable on account of the full statistics given not only throughout the text and the chapter
entitled “Statistics,” but also in the tables at the end of the book. A fair bibliography is also included. The chapter dealing with “Economic Considerations” indicates clearly a number of
economic problems that arise in the commercial fixation of nitrogen. At the beginning of Chapter ii. (p. 11) Bertholet is mentioned instead of Berthollet, and Sir Humphry Davy's name is
spelt incorrectly. No mention is made of MacDougall and Howies, who first worked the arc process in Manchester, and whose patent (1899) preceded that of Bradley and Lovejoy (1902), on the
basis of which the author (p. 12) claims that “the industrial fixation of nitrogen thus had its birth in the United States.” Fixation of Atmospheric Nitrogen. By Frank A. Ernst. (Industrial
Chemical Monographs.) Pp. ix+154. (London: Chapman and Hall, Ltd., 1928.) 12_s_. 6_d_. net. Access through your institution Buy or subscribe This is a preview of subscription content, access
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_Nature_ 123, 372 (1929). https://doi.org/10.1038/123372a0 Download citation * Issue Date: 09 March 1929 * DOI: https://doi.org/10.1038/123372a0 SHARE THIS ARTICLE Anyone you share the
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