Page:The Whetstone of Witte.djvu/79

 in the table.

Master. And so shall you find it in all others.

And farther if the roote bee a nomber mixte, then the firste nomber of the sursolide, is the first nomber of the roote. And this I doe tell you for some helpe, in gessyng at their rootes.

This name therfore of theim, I meane Sursolides, in Airthmetike, maie serue to admonishe you of their roote. But in Geometrie, or in composition of sounde bodies, it serueth to no vse: and therfore I doe call thē agreable to their figure,

Squares of Cubes: bicause thei make a square forme: but so that euery vnitie of that square, is in it self a Cube: As by the figures that folowe, you maie well coniecture.

And also thei are made by multiplication of a Cubike nomber, and a Square nomber together, bothe hauyng one roote: and the Sursolide hauyng the same roote. Wherfore reason with the nature of their sounde figure, inforceth me to call thē squares of cubes.

Yet other menne attendyng more to the nature of their rootes, then to their owne formes and nature, doe giue that name to the nexte rewe of nombers, bicause thei maie be made of multiplication, of any Cubike nomber by it self, that is to saie squarely.

Scholar. it is so. For. 8. whiche is a Cubike nomber multiplied squarely maketh. 64. And that. 64. is set emongeste the Squares of Cubes.

master. And this commoditie commeth by that name: that it putteth menne in remembraunce of the spedie and easie extraction of their roote: As you shall learne hereafter.

but I consideryng their owne nature and makynge, as sounde nombers or bodies: doe call theim Cubes of Cubes, or Cubike cubes.

After these nombers in the seuenth rewe, there do follower those nombers, whiche commonly are called