Letter | Published:

Tables of Four-figure Logarithms

Nature volume 68, page 270 (23 July 1903) | Download Citation



IN mathematical tables the last figure in any tabulated number or difference must be liable to an error ±. When a number is extracted from the tables by aid of a tabulated difference, the result is subject to a duplication of error, that is, to an error ±1. It will be found on examination that in some of the early numbers of the ordinary four-figure log tables the error is often double this amount. Mr. Harrison's alteration remedies this mistake, and makes the maximum error uniform throughout. The scheme proposed by Mr. Stevens can do no more than this, and would be more clumsy. The figures given by him apparently refer to averages, and are irrelevant.

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