Modern instruments and methods of calculation : a handbook of the Napier Tercentenary Exhibition (1914)
Horsburg, E. M. (Ellice Martin), Napier Tercentenary Exhibition (1914 : Edinburgh, Scotalnd) · London : G. Bell · leaf 181
SECTION E The rule, of course, had to be formulated so as to suit the peculiar conditionsof the arithmetic Abacus. The discussion of what might be called the alge-braic Abacus or chess-board-like arrangement for solving equations is beyondthe scope of the present paper. See in this connection .4… … PORTRAIT OF JOHN NAPIER.From a Drawing in the possession of the Earl of Buchan. [To face p. 30. Section FSLIDE RULES The Slide Rule. By G. D. C. Stokes, D.Sc. (i) A Summary of the Historical Development of the Slide Rule to 1850 (The references are to F. Cajoris History of the Logarithmic Slide…