consequently the Distance from Star to Star will not be less than 6000 times the Radius of our _Orbis Magnus_, and consequently upwards of 480,000,000,000 Miles. That this is even less than the real Truth, and may be defended as a very moderate Computation, grounded upon Reason, we have infallible Demonstration to witness, and make appear as thus. [Illustration: Plate XXX.] We know from the Nature of Distance and Motion that the Stars may have an annual Parallax, but it is so very small, that the very best Astronomers have never yet been able to assign what the Quantity really is. Yet it is allow'd by universal Consent, that it can't possibly be more that one Minute of a Degree, and may probably be much less. Mr. _Flamstead_, by repeated Observations, made it in some of them upwards of 40″; but Mr. _Bradley_ has endeavour'd to prove it is every where too small to be determined, and assigns this Angle to another Cause. This way then we cannot make their Distance less; and to prove that it is something more than I have said it is, let us even increase the doubtful Parallax of 40″ to the most it possibly can be, _viz._ to 60″ or 1′; and by the Solution of the Triangle, we shall find that the nearest Star is 6875 times the Radius of the Earth's Orbit from the Sun: And this tho' more than any other Proportion makes them, is still undeniably less than the Truth, which every Mathematician will of course be convinc'd of; and you yourself of force must believe, when you are told, that the smaller the Angle of Parallax is, the farther the Body is remov'd from us. By which Rule, according to Mr. _Flamstead's_ Observations, the Distance must be still greater: By the optical Experiment of [AT]Mr. _Huygins_, greater still than this; and according to Mr. _Bradley_, so much more as not even too be determin'd. [Footnote AT: 27664 Radius's of the _Orbis Magnus_, equal to the Distance of _Syrius_, whose Parallax should be to answer it but 14″ 48‴.] Now if the rest are in general from each other, allowing the same Extent of System, and as much to part the like Extreams of active Virtue, be in such Proportion of aerial Space, it will appear, that to pass from any one Star to another, we must fly thro' so vast a Tract of pure Expanse or Ether, that to visit any one of the most neighbouring Systems, could we travel even as fast as the swiftest Eagle flies, for Instance, 500 Miles _per_ Day, yet should we be 3,000,000 of Years upon our way before we could arrive there; and if continuing on to view the Regions of the rest within the known Creation, Myriads of Ages would be spent, and yet we could not hope to see the whole of but the smallest Constellation.