MINEROLOGY OF THE OCHILS. 



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tempt any description of the varieties of ore that 

 occur. The first named of these mines has been 

 twice opened since the year I760, but has been 

 abandoned on both occasions. But it is not de- 

 termined, whether or not the want of success has 

 arisen from mismanagement, or from the unpro- 

 ductiveness of the mine. From their present state, 

 I found it impossible to make any accurate obser- 

 vations on them. 



Such are the most important facts that I have 

 noticed in the examination I have been able to 

 give to the Ochils. Although the information I 

 have collected be imperfect, I trust that the So- 

 ciety will receive it as a pledge of my readiness 

 to contribute all that I can to the science of mi- 

 neralogy. It may be expected, that I should as- 

 sign the geognostic place of the Ochils. With 

 the limited observations that I have made, I could 

 do no more than throw out conjectures, which 

 would not conduce to the legitimate ends of 

 science. Until more extended examinations shall 

 have been made, I must beg leave to confine my- 

 self to a simple narrative of facts. 



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