(1) Mining Tables (2) The Weights and Measures of International Commerce


    IN the former of these works the authors give a comparison of the units of weight, measure, currency, and mining area of different countries, together with tables, constants, and other data useful to mining engineers and surveyors. In the second work, they reprint a selection of tables that appeal to others besides mining engineers. On the whole, the authors have carried out their difficult task in an admirable manner. It is customary for engineers to get together data for use in their professional work, and the reprint of the authors' collection cannot fail to be of service to other workers in the same field. All such collections have, however, their limitations, as the requirements of no two engineers are precisely the same. We miss, for example, information relating to the strength of materials, tables for converting kilograms per square millimetre into tons per square inch, and the like, and in the table of rates of exchange for money, any reference to Spain, Portugal, or the South American republics.

    (1) Mining Tables.

    By Dr. F. H. Hatch E. J. Vallentine. Pp. viii + 200. (London: Macmillan and Co., Ltd., 1907.) Price 6s. net.

    (2) The Weights and Measures of International Commerce.

    Tables and Equivalents. Pp. 59. (London: Macmillan and Co., Ltd., 1907.) Price 2s. 6d. net.

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    (1) Mining Tables (2) The Weights and Measures of International Commerce . Nature 77, 317 (1908). https://doi.org/10.1038/077317a0

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