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Alcoholic Fermentation. By Arthur Harden, Ph.D., D.Sc., F.R.S., Professor of Biochemistry, London University. Third edition. Boards. Price, $2.20 net. Pp. 194. New York: Longmans, Green & Co., 1923.
Both of these belong to the series of "Monographs on Biochemistry" edited by R. H. A. Plimmer and F. G. Hopkins of England. In the discussion of the chemistry of urea, the matter is treated first from the historical aspect, which is particularly fitting, as urea has had such an important part in the development of modern organic chemistry. Professor Werner, to the surprise of most of us, believes that urea is not a carbamid of the formula , but has the constitution represented by the cyclic formula . Considerable space is given to the presentation of the views for this entertaining hypothesis. The various synthesis of urea are analyzed, and electronic interpretations are used freely. The latter part of
The Chemistry of Urea. The Theory of Its Constitution, and of the Origin and Mode of Its Formation in Living Organisms. JAMA. 1924;82(14):1141. doi:10.1001/jama.1924.02650400051035
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