MR. JACKSON is an experienced editor and computer of logarithmic tables, having already published “Accented Five-Figure Logarithms,” “Pocket Logarithms and other Tables,” &c. Different ...

PROF. PERRY in NATURE of July 2 (p. 198) gives an illustration of a method whereby the logarithms of the numbers from 1000 to 2000 may be got from a four-place ...