Page:The Construction of the Wonderful Canon of Logarithms.djvu/31



is a small table by the use of which we can obtain a knowledge of all geometrical dimensions and motions in space by a very easy calculation. T is deservedly called very small, because it does not exceed in size a table of sines; very easy, because by it all multiplications, divisions, and the more difficult extractions of roots are avoided; for by only a very few most easy additions, subtractions, and divisions by two, it measures quite generally all figures and motions.