Abstract
THE twentieth volume of this valuable publication contains a variety of papers of scientific and technical interest. The May lecture, by Sir Charles Parsons, describes the experiments on the artificial production of diamond made by the lecturer during the last thirty years, and discusses the bearing of the results obtained on the problem of the origin of natural diamonds. A group of papers deals with the grain growth of metals, Dr. Zay Jeffries giving a review of the whole subject, and making much use of experiments with tungsten filaments. The observations are by no means easy to interpret, and some of the conclusions appear to contradict one another; but the author has made a most important contribution to a subject of great interest, and it may be possible shortly to bring the facts into harmony. Mr. D. Hanson, in a short note, describes experiments on the same problem, discussing the relation between the rapidity of grain growth at a given temperature and the amount of deformation to which the material has been previously subjected.
The Journal of the Institute of Metals.
No. 2. 1918. Vol. xx. Edited by G. Shaw Scott, secretary. Pp. xi + 382. (London: Published by the Institute of Metals, 1918.) Price 21s. net.
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D., C. The Journal of the Institute of Metals. Nature 103, 165 (1919). https://doi.org/10.1038/103165a0
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DOI: https://doi.org/10.1038/103165a0