[ iSi ] 



apparent diredion ought neceflarily to tend thither ; and in cafe 

 it could not be difcovered to open one in fome degree oblique 

 to the known, and already difcovered courfe of the vein. 

 Since the compilation of this article w^e viewed the mountains 

 more particularly, and have found the vein, in coming down in 

 an oblique line as far as the lake traverfes above Ambrofe's 

 Shaft a little valley, remounts to the oppofite hill, and is finally 

 loft on the other fide in the mountain which immediately 

 . borders on the lake. The rivulet that flows through the valley- 

 has opened the ground fufficiently to let one fee the dirediion of the 

 vein clearly. If a gallery was opened in that place, and profecuted 

 in the very vein to the right and to the left of the rivulet, one would 

 probably difcover the vein ; but as the rivulet runs down the 

 hill obliquely, and as the courfe of the vein inclines a little in 

 the fame diredion, we believe it would be better to broach the 

 gallery at the very bottom of the valley, taking care however to 

 profecute it in a diredion as much at right angles as poffible to 

 the courfe of the vein ; and when this gallery fhall reach the 

 courfe another gallery ought then to be driven in the vein 

 itfelf to the right and to the left, and as a greater depth will 

 be reached in proportion to the extent in which the work is 

 profecuted in this way. By thefe means, we are of opinion, that 

 an effedual trial may be made of this load. 



. 26th. 



