(1631). Enchiridion arithmeticon, or A manuel of millions: Containing therein mens accompts ready computed, or made vp. : Whereby they may suddenly know the true value of any commodity, at any price whatsoever. And how to resolve many millions of questions, either in reduction, or the golden-rule, without any use of multiplication or division. In so plain a maner that an ordinary capacity may perceive, and after such an infallible way, as no doubt can (justly) be made thereof. For ease and expedition the like hath not bin published.

Enchiridion Arithmeticon, or A Manuel of Millions: Containing Therein Mens Accompts Ready Computed, or Made Vp. : Whereby They May Suddenly Know the True Value of Any Commodity, at Any Price Whatsoever. And How to Resolve Many Millions of Questions, Either in Reduction, or the Golden-rule, Without Any Use of Multiplication or Division. In so Plain a Maner That an Ordinary Capacity May Perceive, and After Such an Infallible Way, as No Doubt Can (justly) Be Made Thereof. For Ease and Expedition the like Hath Not Bin Published. 1631.

Enchiridion Arithmeticon, or A Manuel of Millions: Containing Therein Mens Accompts Ready Computed, or Made Vp. : Whereby They May Suddenly Know the True Value of Any Commodity, at Any Price Whatsoever. And How to Resolve Many Millions of Questions, Either in Reduction, or the Golden-rule, Without Any Use of Multiplication or Division. In so Plain a Maner That an Ordinary Capacity May Perceive, and After Such an Infallible Way, as No Doubt Can (justly) Be Made Thereof. For Ease and Expedition the like Hath Not Bin Published. 1631.