Enneades arithmeticæ, the numbring nines,

Enneades arithmeticæ, the numbring nines, or, Pythagoras his table extended to all whole numbers under 10000 and the numbring rods of the Right Honourable John Lord Nepeer : enlarged with 9999 fixt columns or rods, of single, double, triple, and quadruple figures, and with a new sort of double and moveable rods, for the much more sure, plain and easie performance of multiplication, division, and extraction of roots ...