Therefore
8 A plaine of the greatest circle and 4, is the sphericall.
This consectarium is manifest out of the former element.
And
9 As 7 is to 22. so is the quadrate of the diameter unto the sphericall.
For 7, and 22, are the two least bounds in the reason of the diameter unto the periphery: But in a circle, as 14, is to 11, so is the quadrate of the diameter unto the circle. The analogie doth answer fitly: Because here thou multipliest by the double, and dividest by the halfe: There contrariwise thou multipliest by the halfe, and dividest by the double. Therefore there one single circle is made, here the quadruple of that. This is, therefore the analogy of a circle and sphericall; from whence ariseth the hemispherical, the greater and the lesser section.
And
10 The plaine of the greatest periphery and the ray, is the hemisphericall.
As here, the greatest periphery is 44. the ray 7. The product therefore of 44. by 7. that is, 308. is the hemisphericall.