Geological Obfervations. 387 



lions are found upon, but not in thefe moun- 

 tains. 



Heterogenous,orcompoundftratified moun- 

 tains *, confift of alternate ftrata of various 

 fpecies of ftones, earths or fands either of the 

 calcareous or argillaceous genus, or both, or 

 metallic ores, and fometimes lava, as toad- 

 ftone, &c. The lime-ftone is always of the 

 laminar, and not of the granular or fcaly 

 kind, and when it contains any ore, this is 

 placed between its laminae ; it is very feldom 

 that ftones of the filiceous genus form any 

 ftratum in thefe mountains, except lavas ; 

 but the ftrata are frequently interrupted by 

 filiceous mafles ; fuch as jafper, porphyry, 

 granite, &c. thefe may be called flops f. 

 Coal, bitumen, petrifications and organic 

 impreffions, are found in thefe mountains ; 

 alfo falts, calamine, gold in the fandy ftrata, 

 iron in intire ftrata or neftways, copper in 

 the ftrata, lead ore, fingly or mixed with 

 copper, (it fometimes {hoots through the 

 ftrata in fmall veins,) cobalt ore in the flops, 

 pyrites every where ; it fometimes confti- 

 tutes whole ftrata ; the matrixes of thefe 

 ores are chiefly of the calcareous or barytic 

 genera, rarely quartz, and never mica. 



* Flotxgelurge. f Klancken, kamme, RucJien Week- 



f*1. I am not acquainted with the correfpondcnt EngKJb 

 technical terms, 



C c 2 There 



