38 
ficient to make those who have found it, and who were 
pretty well versed in the science of Mineralogy, inquire 
what it was ; and Werner, I suppose, seems satisfied that 
it ought to have aname which might distinguish it. 
The specimen figured comes from Bristol, and I have 
some also from near Keswick, in Cumberland. I believe 
it is not very rare. The lower geomeirical figures are in- 
tended to show the forms of the crystals as above men- 
tioned. 
