In this figure it is manifest, that the earth in the midest, cannot moue by any streight motion, vpward towarde (_N_) or sideward toward (_M_) or any other way out of its proper place, and therefore that opinion of _Copernicus_ and others, that the earth should moue round once a yeere in such a Circle as (_MPR_) is most improbable & vnreasonable. And reiected by the most. But although it cannot moue streight, it may moue round. For though it be a marueilous great body of vnconceaueable weight, yet being equally poised on euery side, there is nothing can hinder its Circular motion. As in a Globe of Lead, or any other heauy substance, though it were 40. Fadome in compasse, yet being set vpon his two Poles, it would easily bee turned round euen with a touch of ones little finger. And therefore it is concluded that this circular motion is not impossible. The probabilitie of it is thus made plaine. The whole circuit of the Heauens, wherein are the fixed Starrs is reckoned by Astronomers to bee 1017562500. that is a Thousand and seauenteene Millions of miles, fiue hundred sixty two thousand, and fiue hundred miles. Let this bee the compasse of the Circle (_NMOZ_.) So many miles doth the Heauens moue in one day, till the same point come to the place from whence it went; as till (_N_) moue round, and come to (_N_) againe. This being the motion of the whole day 24. houres, how many miles will (_N_) moue in one houre? it will moue 42398437 and a halfe. i.e. Forty two Millions three hundred ninty eight thousand, foure hundred thirty seuen miles and an halfe. So many miles will (_N_) moue in one houre, from (_N_) to (_M_.) A motion so swift that it is vtterly incredible. Farre more likely it is, the circuit of the earth (_ASXV_) being about 24000. i.e. twenty foure thousand miles more or lesse, it should moue round once a day. For then one point as (_X_) should moue in one houre from (_X_) to (_V_) but a thousand miles, which motion although it bee swifter then any arrow or bullet from a Cannons mouth, yet is it incomparably slower then that of the Heauens, where so many Millions are posted ouer in an houre. Now for the saluing of all the caelestiall Phaenomena, or appearances, the truth is the same, if wee suppose the earth to moue, as if wee beleeue it to stand still. The riseing of the Sunne and Starres, the motions of all the Planets, will keepe Correspondence that now. Nor neede wee feare logging, or that steples and towers would totter downe, for the motion is regular, and steady without rubbes, and knocks. As if you turne a globe about, it will goe steadyly, and a fly will set fast vpon it, though you moue it apace. Besides the whole body the ayre is carryed about with the whirlinge of the earth, so that the earth will make noe winde, as it turnes swiftly about; as a wheele will, if it bee turned apace.