inſtead of being in that Part of the Heavens in which the Ram was ſituated in the Time of Hipparchus, is found to correſpond with that Part of the Heavens in which the Bull was ſituated; and the Twins are plac'd where the Bull then ſtood. All the Signs have chang'd their Situation, and yet we ſtill retain the ſame Manner of ſpeaking as the Ancients did. In this Age we ſay that the Sun is in the Ram in the Spring, from the ſame Principle of Condeſcenſion that we ſay that the Sun turns round.
Hipparchus was the firſt among the Greeks who obſerv'd ſome Change in the Conſtellations with regard to the Equinoxes, or rather who learnt it from the Egyptians. Philoſophers aſcrib'd this Motion to the Stars; for in thoſe Ages People were far from imagining ſuch a Revolution in the Earth, which was ſuppos'd to be immoveable in every reſpect. They therefore created a Heaven in which they fix'd the ſeveral Stars, and gave this Heaven a particular Motion by which it was carried
