Note n — BOOK VIII.
Reading edition
It is almost impossible, by Reason of their perpetual Motion, and changing Places, to count the Number of the Animalcules, in only a Drop of the green Scum upon Water; but I guess I have sometimes seen not fewer than 100 frisking about in a Drop no bigger than a Pin’s Head. But in such a Drop of Pepper-water, a far greater Number; these being much less than those.