Copper and Native Copper, with a little Quartz and Copper 

 Pyrites. The fibres on this are larger, and show signs of 

 elongated octaedrons and rectangular prisms. They are 

 beautifully pellucid and transparent, with the full lustre of 

 a ruby. We may add that there is a regular gradation from 

 the powdery oxide, naturally opaque, through masses of 

 confused filaments so extremely fine as to partake of the 

 same opacity, to such as resemble fine wool. 



We were favoured with this last specimen by Messrs. 

 W, and R. Phillips, who had it from Redruth in Cornwall. 



