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Rh little from that in which Earth moves, call’d The Plane of the Ecliptick. This Plane is cut obliquely by the Axis upon which the Earth turns it elf round with repect to the Sun in 24 Hours, whence arie the Succeions of Day and Night: The Axis of the Earth always keeping the ame Inclination to the Ecliptick (except a mall Change bet known to the Atronomers) while the Earth itelf is carried in its yearly Order of the Seaons of the Year: as you may ee in all Atronomers Books. Out of which I hall trancribe hither the Periods of the Revolutions of the Planets, viz. Saturn moves round the Sun in 29 Year, 174 Days, and 5 Hours: Jupiter finihes his Coure in 11 Years, 317 Days, and 15 Hours: Mars his in about 687 Days. Our Year is 365 Days 6 Hours: and Mercury’s 88 Days. This is the now commonly received Sytem, invented by Copernicus, and very agreeable to that frugal Simplicity Nature hows in all