But a more evident Proof of this Change is drawn from the Observation of the Application of the Moon to _Palilicium_, _An. Chris._ 509. _Mar. 11._ when, in the Beginning of the Night, the Moon was seen to follow that Star very near, and seemed to have eclipsed it, ἐπέβαλλε γὰρ ὁ ἀστηρ τῳ πᾶρα την διχοτομίαν μέρει τῆς κυ'ρτυς περιφειας τõυ πεφωτισμένου μερους, _i.e._ _Stella apposita erat parti per quam bisecabatur limbus Lunæ illuminatus_, as _Bullialdus_, to whom we are beholden for this ancient Observation, has translated it. Now, from the undoubted Principles of Astronomy, this could never be true at _Athens_, or near it, unless the Latitude of _Palilicium_ were much less than we at this Time find it[AM]." [Footnote AM: Vide _Bulialdi Astr. Philolaica_, p. 172.] The [AN]Motion of _Arcturus_ seems further confirmed, from the Observations of _Tycho Hevelius_ and Flamstead; for _Hevelius_ sets down the Distance of that Star from _Lyra_ 4′ greater than _Tycho_ had observed it seventy-two Years before him, and _Flamstead_ twenty-two Years after measured the Distance betwixt the same two Stars, still 3′ greater than _Hevelius_ found it; so that if _Lyra_ had stood still all that while, there was an Appearance of _Arcturus's_ having gone 7′ out of his Place in the Space of an hundred Years. See Dr. _Long_'s Astronomy, p. 274. [Footnote AN: These are the nearest and greatest of the fixed Stars, the Motion of the others not having been observed, or being at too great a Distance, are either imperceptible, or have not been taken notice of.] It is further to be observed, in Confirmation of the Motion of one of these Stars, that _Flamstead_ found the Distance of _Arcturus_, from the Head of _Hercules_ 3′ greater than it is set down by the Prince of _Hesse_; and that his Distance from the _Lion's Tail_ was a little decreased with 5½′ less Latitude than _Tycho_ had observed. Hence, to make these Observations agree, one or both of them must have moved together equal to 7′. This Change of Place, which is quite contrary to all known Causes proceeding from the Earth, must therefore be occasioned either by the Motion of the Sun, or by a particular Motion of their own; but if, amongst themselves, they must all move, and if all be in Motion, the Sun must also move. If these Observations, delivered down to us by very able Astronomers, be either true or near it, as great Allowances have been made for the Ignorance of the Ages in which they were taken, and the Inaccuracy of the Instruments, we may naturally conclude, that these Stars must have a Motion; and if they move, as has been before observed, the Sun must also; hence he cannot now be in the original Plane of the Earth's annual Direction, or at least in the same identical Place he was at first possessed of: And if so, the Stars must also have the like Motion, though in different Directions, and all may thus be governed by the same impulsive Power.