eon 
re) 
stones; some having the whole composition, yet being in 
the form of a granular stone; viz. whitish Steatite, green 
granular Chlorite, Silex, and Clay. Some of the stones 
found above it are coated with this, and are Flint, or Flinty 
Hornstone, within. 
Fuller’s Earth is more or less massive, dull, somewhat 
granular. It does not soil the fingers, and may be polished 
by handling, though more by the finger nail; particles in 
grains, and on the edges, often admitting light, give it a 
waxy transparency. It feels soft and greasy, is easily 
scratched by the finger nail, cracks irregularly on drying ; 
fracture large or small, conchoidal, deep, zigzag, sharp 
and angular, sometimes broad and plated; roughens by 
wetting, scarcely adheres to the tongue, becomes lighter on 
drying, but if pressed before it be dry, nearly retains its 
original colour; falls gently to powder in water, where it 
~ feels soft, and does not stick to the fingers.—Colour light- 
brown to dark-greenish brown, uniformly of one tint, of 
rather accidentally spotted, striped and clouded, some- 
times with talcose particles glistening in it. For sale it is 
generally chosen as nearly uniform as possible. 
As there appears to be some confusion among the authors 
I have looked at for this Earth, I have thought it the more 
necessary to be thus particular. | 
Mr. Hatchett once intended to examine the Fuller’s 
Earth chemically, and made much inquiry about it, but we 
have to regret that he did not complete his experiments. He 
informs me that he knew of none from Hampshire, and 
that he believed Bergman and others had been led into a 
mistake, 
