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160 intead of being in that Part of the Heavens in which the Ram was ituated in the Time of Hipparchus, is found to correpond with that Part of the Heavens in which the Bull was ituated; and the Twins are plac'd where the Bull then tood. All the Signs have chang'd their Situation, and yet we till retain the ame Manner of peaking as the Ancients did. In this Age we ay that the Sun is in the Ram in the Spring, from the ame Principle of Condecenion that we ay that the Sun turns round. was the firt among the Greeks who oberv'd ome Change in the Contellations with regard to the Equinoxes, or rather who learnt it from the Egyptians. Philoophers acrib'd this Motion to the Stars; for in thoe Ages People were far from imagining uch a Revolution in the Earth, which was uppos'd to be immoveable in every repect. They therefore created a Heaven in which they fix'd the everal Stars, and gave this Heaven a particular Motion by which it was carried towards