46 
known by its greater softness as Serpentine. This, there- 
fore, includes a very interesting lesson, and I am obliged 
to Earl Seaforth for so handsome a specimen. 
The lower specimen came from North Wales, and was 
sent me by the Rev. H. Davies: the Chlorite which holds 
some Pyrites in the veins or marbling of this, and the 
Pyrites with the rest of the substance, are not far from 
agreeing with the Meteor-stones. 
Steatite and Serpentine differ but little except in the 
colour, which seems much to depend upon Iron. Steatite 
has been found in secondary crystals, chiefly im the form of 
those of Quartz. 
