LUING. GEOLOGY. 143 



traversed them, they present none of the larger trans- 

 ported stones supposed to be of diluvian origin, with 

 the exception of Isla, where I shall have occasion to 

 mention them hereafter. 



It rests on the authority of Mr. Raspe, who was 

 employed by the proprietors in the survey of some of 

 the Western islands, that lead, zinc, and silver have 

 been found in Luing. I could procure no positive in- 

 formation on this subject ; and if I am inclined to doubt 

 the accuracy of that report, it is not because my 

 knowledge of the island is sufficient to authorize that 

 scepticism. Circumstances dependent on the well known 

 anxiety for the discovery of mines which pervaded the 

 Highland proprietors some years ago, may perhaps ac- 

 count for this and similar reports. 



