Of the little Animals that make up our Life, and likewise cause our Diseases; and of the Disposition of the Towns in the Moon.

During all this Discourse, I made Signs to my Landlord, that he would try if he could oblige the Philosophers to fall upon some head of the Science which they professed. He was too much my Friend, not to start an Occasion upon the Spot: But not to trouble the Reader with the Discourse and Entreaties that were previous to the Treaty, wherein Jest and Earnest were so wittily interwoven, that it can hardly be imitated; I’ll only tell you that the Doctor, who came last, after many things, spake as follows:

“It remains to be proved, that there are infinite Worlds, in an infinite World: Fancy to your self then the Universe as a great Animal; and that the Stars, which are Worlds, are in this great Animal, as other great Animals that serve reciprocally for Worlds to other Peoples; such as we, our Horses, &c. That we in our turns, are likewise Worlds to certain other Animals, incomparably less than our selves, such as Nits, Lice, Hand-worms, &c. And that these are an Earth to others, more imperceptible ones; in the same manner as every one of us appears to be a great World to these little People. Perhaps our Flesh, Blood, and Spirits, are nothing else but a Contexture of little Animals 103 that correspond, lend us Motion from theirs, and blindly suffer themselves to be guided by our Will which is their Coachman; or otherwise conduct us, and all Conspiring together, produce that Action which we call Life, “For tell me, pray, is it a hard thing to be believed, that a Louse takes your Body for a World; and that when any one of them travels from one of your Ears to the other, his Companions say, that he hath travelled the Earth from end to end, or that he hath run from one Pole to the other? Yes, without doubt, those little People take your Hair for the Forests of their Country; the Pores full of Liquor, for Fountains; Buboes and Pimples, for Lakes and Ponds; Boils, for Seas; and Defluxions, for Deluges: And when you Comb your self, forwards, and backwards, they take that Agitation for the Flowing and Ebbing of the Ocean. Doth not Itching make good what I say? What is the little Worm that causes it but one of these little Animals, which hath broken off from civil Society, that it may set up for a Tyrant in its Country? If you ask me, why are they bigger than other imperceptible Creatures? I ask you, why are Elephants bigger than we? And the Irishmen, than Spaniards?

“As to the Blisters, and Scurff, which you know not the Cause of; they must either happen by the Corruption of their Enemies, which these little Blades have killed, or which the Plague has caused by the scarcity of Food, for which the Seditious worried one another104 and left Mountains of Dead Carcases rotting in the Field; or because the Tyrant, having driven away on all Hands his Companions, who by their Bodies stopt up the Pores of ours, hath made way out for the waterish matter, which being extravasted out of the Sphere of the Circulation of our Blood, is corrupted. It may be asked, perhaps, why a Nit, or Hand-worm, produces so many disorders: But that’s easily conceived, for as one Revolt begets another, so these little People, egg’d on by the bad Example of their Seditious Companions, aspire severally to Sovereign Command; and occasion every where War, Slaughter, and Famine.

“But you’ll say, some are far less subject to Itching than others; and, nevertheless, all are equally inhabited by these little Animals, since } r ou say they are the Cause of our Life. That’s true; for we observe, that Phlegmatick People are not so much given to scratching as the Cholerick; because the People sympathizing with the Climate they inhabit, are slower in a cold Body, than those others that are heated by the temper of their Region, who frisk and stir, and cannot rest in a place: Thus a Cholerick Man is more delicate than a Phlegmatick; because being animated in many more Parts, and the Soul being the Action of these little Beasts, he is capable of Feeling in all places where these Cattle stir. Whereas the Phlegmatick Man, wanting sufficient Heat to put that stirring Mobile in Action, is sensible but in a few places.

“To prove more plainly that universal Vermicularity, you need but consider, when you are wounded, how the Blood runs to the Sore: Your Doctors say that it is guided by provident Nature, who would succour the parts debilitated; which might make us conclude, that, besides the Soul and Mind, there were a third intellectual Substance, that had distinct............