The art of numbring by speaking-rods: vulgarly termed Nepeirs [sic], bones. By which the most difficult parts of arithmetick, ... are performed with incredible celerity and exactness ... by addition and substraction only.
Leybourn, William,1626-1716.
London, printed by T.B. for H. Sawbridge,...
1685
Wing (2nd ed.)
ESTC
Napier, John, 1550-1617.
Logarithms