jo The Production and Generation 



a fufrrcient diftance, without having been in the 

 lead broke off, or fmoothed. 



I muft not omit mentioning, on this occafion, 

 that ufually, under the title of fyrites-Jhoads, we 

 aifo include the fquats, or flat-wcrks, which are 

 commonly copper-pyrites, and juflly, as thefe, 

 with their upper and under earth-layers, are 

 couched in ftrata, one upon the other. To this 

 Lohneifs refers *, when he fays •, c we alio find 



* jfquatSy which extending in length and breadth, 



* often take in a large compafs of rock, which 

 ' we cdMJhcad, &c.' but with this remarkable dif- 

 ference, that on fuch flat-veins, not the ore itfelf, 

 as is the cafe with the Jhoads hitherto defcribed, 

 but only the earth, whereon afterwards the ore 

 comes gradually to be generated, is thus couched 

 and laid. 



As to flat-veins, thefe, in regard to their origin 

 From the deluge, deferve a quite different con- 

 fideration. Sand-ftone, lime-ftone, marle-ftone, 

 and Ihiver, which generally form fljuats, plainly 

 manifeft, upon a fomewhat more accurate infpec- 

 tion, that they are a concreted fand, or hardened 

 earth. The feveral figures of herbs, wood, bones, 

 fhells, and filh, are far from being lujus nature, 

 or fortuitous images, but are, in part, actual bo- 

 dies, fomehow or other conveyed thither, or, at 

 leaft, the impreflions of thefe bodies. This I have 

 fhewn, from feveral circumflances, in my Flora 

 Satumizans - 9 particularly from the nature of their 

 beds or matrixes, from that of the bodies them- 

 felves, which are commonly durable, hard, and 

 Honey. And here I muft rectify a miftake I was 

 thereunder; namely, in not allowing the hyftero- 

 lithos to be an actual fpecies of muffels, and doubt- 

 ing about the glojjopetrce being the teeth of fea- 



dogs > 

 * £erg-baa-buch, 



