I 
Mr. Hatchett’s Analysis , &c. 1 1 1 
extracted something which the simple dilution with water pre- 
cipitated. 
The remaining part was repeatedly digested with muriatic 
acid, and treated with water, as before, till the milky appear- 
ance was no longer produced. 
The properties of this white precipitate, Mr. Wedgwood states 
to be as follows. 
ist. It is only soluble in boiling concentrated muriatic acid. 
2 dly. It is precipitated by water, in the form of a white earth; 
which may again be dissolved by boiling muriatic acid. 
gdly. When nitric acid is mixed with the muriatic solution 
of this earth, there is no appearance of a precipitate ; not even 
when water is added, provided that the nitric acid exceeds, or 
nearly approaches, the quantity of muriatic acid. 
4 thly. The earth is precipitated by the alkalies. 
^thly. The muriatic solution does not crystallize by evapo- 
ration ; but becomes a butyraceous mass, which soon liquefies 
on exposure to the air. 
6thly. The butyraceous mass is not corrosive to the taste ; 
and is even less pungent than the combination of calcareous 
earth with the same acid. 
7thly. Heat approaching to ignition disengages the acid from 
the butyraceous mass, in white fumes, and a white substance 
remains. 
8thly. The white precipitated earth is fusible per se, in from 
142 0 to 156° of Mr. Wedgwood’s thermometer, and it is thus 
distinguished from all the other primitive earths. 
And, 9 thly. This precipitate cannot be reduced to a metallic 
state, when exposed to heat with inflammable substances. 
From these properties, Mr. Wedgwood says, that although 
