Rare Books

Enchiridion arithmeticon; or, A manual of millions: or, Accounts ready cast up. : To shew suddenly thereby, the true value of any commoditie at any price whatsoever. And how to resolv many millions of questions, either in reduction,or the golden rule, with-out any use of maltiplication or division. In so plain a manner, that an ordinary capacitie may easily perceiv, and after such an infallibl way, as no doubt can (justly) be made thereof This beeing the second edition, is now made more plain than the first. And there is also a second part added thereunto, which is of so great concernment, as wil make the book far more useful than ever it was heretofore