68 The Production and Generation 



This, certainly, muft be allowed, that thefe fhoads 

 generally contain tin, or iron-flone, or both to- 

 gether ; at leaft, no flream-work, confiding of 

 pure Jh oad, is hitherto worked for other metals. If 

 pyrites-Jhoads are not always found in the under- 

 turf earth, this may be owing to our want of care 

 in examining the upper earth in its feveral beds : 

 for, as to pyrites in flat-works, we have plenty, 

 both bed and #$/?-wife, generated either fhort, or 

 Jong after the deluge, as fhall appear below. And 

 at Wiera, not far from Neuftadt, on the Orla 

 in the Qfterland, a copper-pyrites was accidentally 

 found, in digging for a cellar, at the depth of a 

 fathom and a half; alfo in other parts thereabouts, 

 upon digging down from the day. 



Now this fupplies us with fome circumftances 

 particularly meriting attention, (i) That in this 

 cafe we obferve neither flat-work, nor vein, in 

 which the ore mould take its direction. (2) That 

 the ores are not immediately dependent on, or con- 

 nected with each other, but appear in piece-meal ; 

 and though at no great diftance afunder, yet, by 

 the interpofing under- turf earth, are often greatly 

 divided and fcattered. (3) That thefe pieces, 

 though happening to lie pretty clofe together, ne- 

 ver exhibit any appearance of their having ever 

 been joined, as we often meet with veins, where 

 the ore is cut afunder with fiffures, and thefe fif- 

 fures fo fluffed with gurs, as if, by their means, 

 the parts had been feparated to a greater diftance ; 

 but then, in this cafe, a curious eye difcovers the 

 parts to have been once joined, and that they plainly 

 formed together an actual vein. (4) That thefe cop- 

 per famples fhew edges and corners fo (harp, that if 

 we fuppofe the place they are found in, not to be 

 that of their birth, yet it could be at no great 

 diftance off, if we confider that fuch broken frag- 

 ments may, by rolling, become fmooth, and wore 

 round. But 



