Abstract
THIS is a well-arranged and clearly printed book of forty-three octavo pages. Besides four figure logarithms of numbers and of circular functions, and the circular functions themselves, it contains a table of logarithms of hyperbolic functions, occupying three pages, Gaussian logarithms of sums and differences, inverse circular functions (the argument being the log. sine, &c.), and a special table for finding the logarithms of circular functions of small angles, which is to be used by reducing the angle to minutes, and then adding its logarithm to a logarithm given in the table. There is no table of antilogarithms, but it is not needed, as the logarithms of numbers extend over more than a complete cycle, beginning with the number 100, and ending with 1999, so that the differences between successive logarithms are always small. A saving of space, without loss of utility, has been obtained by carrying the proportional parts only as far as 5 instead of to 9 as usual. This involves subtraction for 6, 7, 8, and 9, but the quantity to be subtracted is so small that the operation can be performed mentally. The sixteen pages of “Explanation of the Tables,” including a page and a half on Hyperbolic Functions, are remarkably clear and good.
Mathematical Tables, chiefly to Four Figures.
First Series. By James Mills Peirce., University Professor of Mathematics in Harvard University. (Boston, U.S.: Ginn and Heath, 1879.)
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E., J. Mathematical Tables, chiefly to Four Figures . Nature 21, 346 (1880). https://doi.org/10.1038/021346a0
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DOI: https://doi.org/10.1038/021346a0