[ 4 * ] 
for Carbines and Piftols. The Pyrites Argenteus , 
or Silver Marcafite, was found in great Plenty 
on digging a Well at Dedington in Oxford/hire, and 
fometimes it is taken out of the Belemnites found 
in that Neighbourhood. A particular Sort of Mar¬ 
cafite, called by the Inhabitants thereabout Crow 
Iron, within of a golden, but without of a darkifh 
rufly Colour, is very frequently met with at AJion 
Rozvant in Oxford {hire, and another Kind at Henley 
upon Thames. The Pyrites is alfo often found in 
Staffordshire. 
Mineralia. Metallica. 
Here are to be feen a large Collection of Ores 
from almoft all the known Mines in the World. I 
fhall not detain my Reader long on this SubjeCt, 
but refer him for farther Satisfaction to the Speci¬ 
mens here preferved. 
Thofe on the upper Shelves on the Left-hand 
confift of Lead Ore ; the next under them are the 
Silver and Gold Ores, and the Bottom Shelves con¬ 
tain Tin Ores. 
On the Shelves on the Right-hand are firft the 
Iron, then the Copper Ores, where the azure Stone, 
or Lapis Lazuli , and the Turcois, are very rare 
Specimens, and are to be ranked among the preci¬ 
ous Stones. 
The next Shelf contains Quickfilver and Cinna¬ 
bar Ores. The others are Antimony, Bifmuth, 
Cobalt, and Calamin, ( Lapis Calaminaris ) called 
Semimetals •, for thefe yield a very fmall Regulus, 
pr liquid Metal, which, though it can be melted 
again, is not by itfelf duCtile, or fo far malleable 
as to be of any Ufe to Manufacture. The Lapis 
Calaminaris is found in great Plenty on the Men- 
