"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 _Irish_-men, 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 another[2] 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 you 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.