Abstract
(1) THE first table in this edition of Dr. Bruhns' Manual is a reprint of K?hler's table of logarithms of integers from 10000 to 100000, covering 180 pages. Auxiliary tables of proportional parts at the side of each page give all necessary assistance to a computer in finding the logarithms of six- and seven-figure numbers. Eight-figure logarithms of integers between 100000 and 108000 are not given, as in the original Kohler and the modern Chambers, “since the addition of logarithms of numbers from 100000 to 108000 does not appear to offer a sufficient advantage.” With this we do not agree. Eight places of decimals in logarithmic work in dealing with numbers that slightly exceed 1.0 are only equivalent to seven places for numbers in the neighbourhood of 9.0. Within recent years the present reviewer was engaged in computing work in which the eight-figure logarithm was essential for numbers just greater than i-o. In fact it was only regretted that the eighth figure was not available from 100000 to 115000.
(1) A New Manual of Logarithms to Seven Places of Decimals.
Edited by Dr. Bruhns. Thirteenth Stereotype edition. Pp. xxiv + 610. (London: Chapman and Hall, Ltd., 1922.) 12s. 6d. net.
(2) Tables of ir2 and ir2 for Use in Partial Correlation and in Trigonometry.
By Dr. J. R. Miner. Pp. 49. (Baltimore, Md.: The Johns Hopkins Press, 1922.) 1 dollar.
(3) Two-figure Tables.
Compiled by C. R. G. Cosens. On Card, 10 in. × 4¾ in. (Cambridge: Bowes and Bowes; London: Macmillan and Co., Ltd., n.d.) 6d. Quantities of one or more dozens supplied at 4s. per dozen.
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B., W. (1) A New Manual of Logarithms to Seven Places of Decimals (2) Tables of √1– r2 and 1– r2 for Use in Partial Correlation and in Trigonometry (3) Two-figure Tables. Nature 111, 320 (1923). https://doi.org/10.1038/111320a0
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DOI: https://doi.org/10.1038/111320a0