always the Fore-runners of ſome great Calamity which was to befall Mankind. Sir Iſaac Newton, on the contrary, ſuſpected that they are very beneficent; and that Vapours exhale from them merely to nouriſh and vivify the Planets, which imbibe in their Courſe the ſeveral Particles the Sun has detach'd from the Comets; an Opinion which at leaſt is more probable than the former. But this is not all. If this Power of Gravitation or Attraction acts on all the celeſtial Globes, it acts undoubtedly on the ſeveral Parts of theſe Globes. For in caſe Bodies attraſt one another in Proportion to the Quantity of Matter contain'd in them, it can only be in Proportion to the Quantity of their Parts; and if this Power is found in the whole, 'tis undoubtedly in the half, in the quarter, in the eighth Part, and ſo on in infinitum.
This is Attraction, the great Spring by which all Nature is mov'd. Sir Iſaac Newton after having demonſtrated the Exiſtence of this Principle, plainly
