in Natural History, is an old name for gypsums or plaster-stones. The name is derived from φόλις, a scale or small flake, because they are composed of particles of that form.

Ichthyology, is the name of a small anguilliform fish. The back is brown, the belly is white, the whole back and sides are spotted, and the skin is soft, free of scales, but with a tough mucilaginous mat- This species most of all approaches to the alauda; and though usually larger, yet Mr Ray doubts whether it really differs from it in anything essential; the distinction is its colour, which though a very obvious is certainly a very precarious one.