know that there are a multitude of ſuch Earths inhabited and adorned as well as our own. And we ſhall worſhip and reverence that God the Maker of all theſe things; we ſhall admire and adore his Providence and wonderful Wiſdom which is diſplayed and manifeſted all over the Univerſe, to the Confuſion of thoſe who would have the Earth and all things formed by the ſhuffling Concourſe of Atoms, or to be without beginning. But to come to our Purpoſe. [Copernicus’s Syſtem explained.] And now becauſe the chief Argument for the Proof of what we intend will be taken from the Diſpoſition of the Planets, among which without doubt, the Earth muſt be counted in the Copernican Syſtem, I ſhall here firſt of all draw two Figures. The firſt is a Deſcription of the Orbs the Planets move in, in that order that they are placed round the Sun, drawn as near as can be in their true Proportions, like what you have ſeen in my Clock at home. The ſecond ſhows the Proportions of their Magnitudes in reſpect of one another and of the Sun, which you know is upon that ſame Clock of mine too. In the firſt the middle Point or Center is the Place of the Sun, round which, in an order that every one knows, are the Orbits of Mercury, Venus, the Earth with that of the Moon about it; then thoſe of Mars, Jupiter and Saturn: and about the two laſt the ſmall Circles that their Attendants move in: about Jupiter four, and about Saturn five. Which Circles as well as that of the Moon are drawn larger than their true Proportion would admit, otherwiſe they could not have been ſeen. You may eaſily apprehend the Vaſtneſs of theſe Orbits by this, that the diſtance of the Earth from the Sun is ten or twelve thouſand of the Earth’s Diameters. Almoſt all theſe Circles are in the ſame Plane, declining very little from that in which the Earth moves, call’d The Plane of the Ecliptick. This Plane is cut obliquely by the Axis upon which the Earth turns it ſelf round with reſpect to the Sun in 24 Hours, whence ariſe the Succeſſions of Day and Night: The Axis of the Earth always keeping the ſame Inclination to the Ecliptick (except a ſmall Change beſt known to Aſtronomers) while the Earth itſelf is carried in its yearly Courſe round the Sun, cauſes the regular Order of the Seaſons of the Year: as you may ſee in all Aſtronomers Books. Out of which I ſhall tranſcribe hither the Periods of the Revolutions of the Planets, viz. Saturn moves round the Sun in 29 Years, 174 Days, and 5 Hours: Jupiter finiſhes his Courſe in 11 Years, 317 Days, and 15 Hours: Mars his in about 687 Days. Our Year is 365 Days 6 Hours: Venus’s 224 Days 18 Hours: and Mercury’s 88 Days. This is the now commonly received Syſtem, invented by Copernicus, and very agreeable to that frugal Simplicity Nature ſhows in all [Arguments for the Truth on’t.] her Works. If any one is reſolved to find fault with it, let him firſt be ſure he underſtands it. Let him firſt ſee in the Books of Aſtronomers with how much greater Eaſe and Plainneſs all