VEINSTONES, 



JLHESE stones have, in cabinets, been often 

 confounded with rocks, from which they should in 

 general be carefully distinguished. They are call- Name. 

 ed veinstones, because they are found in the veins, 

 either metallic or barren, which traverse many 

 mountains. 



The reader who desires complete information 

 concerning those veins, one of the most important 

 topics in the science, is referred to the elaborate 

 work of Werner*. A few general ideas will be 

 sufficient for the present design. 



Most mountains consist of stratified rocks, by Werner 



account. 



the Germans called fleet ze; and the beds are 

 often intersected, almost at right angles, by what 

 are called veins, of more or less length, depth, and 

 thickness ; sometimes metallic, and sometimes of 

 a rocky substance ; but dissimilar from other parts 



of the mountain. Oppel, formerly president of 



i 



* Nouvelle Theorie de la formation des Filons. Traduite par 

 Daubuisson. Paris, 1802, 8vo. 



