Abstract
THE first edition of this book appeared in 1932. Dr. Harker had completed the revision of the text of this second edition only a few weeks before his death, which took place in July 1939. The modifications appearing in the new edition are chiefly minor changes, usually limited to a few words each, leading to certain clarifications. In addition, references to some of the work which has appeared between 1932 and 1939 are given, but little new matter is incorporated in the text. Among the more important alterations are the following: the cordierite-anthophyllite rocks of Kenidjack, Cornwall, are now considered with Eskola's Orijarvi analogues in the chapter dealing with pneumatolysis and metasomatism; brief mention is made of recent experiments by Bridg-man and Larsen on stress effects; the inhibition of reactions through the presence of carbonaceous material, a notion rather frowned upon in the first edition, is now admitted to be possible; there are certain additional remarks on the Inchbae aureole, adinoles, the oligoclase zone, eclogites, etc. The book thus remains essentially unchanged.
Metamorphism
A Study of the Transformations of Rock-Masses. By Dr. Alfred Harker. Second edition, revised. Pp. x + 362. (London: Methuen and Co., Ltd., 1939.) 21s. net.
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READ, H. Metamorphism. Nature 145, 644 (1940). https://doi.org/10.1038/145644a0
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DOI: https://doi.org/10.1038/145644a0