

ST. CORMAC'S ISLES, &C. GEOLOGY. 2?7 



Knap have no names that I could discover ; but, like 

 that point itself, and the whole shore, they consist of 

 similar strata placed in the same direction, with the same 

 dips and with corresponding alternations. 



The small island Craig Daimve, lying off the point of 

 Keils, may be noticed here. It consists almost entirely 

 of chlorite schist, containing imbedded nodules of a non- 

 schistose substance, which gives to the whole compound 

 a very singular aspect. These are formed of a mixture 

 of hornblende and chlorite, containing distinct imbedded 

 grains of epidote and of quartz in considerable abundance. 

 They present a compound so singularly tough as scarcely 

 to admit of being broken by any ordinary force. 



The position of this little island, no less than the di- 

 rection of the strata, would be sufficient to prove that 

 it was a detached portion of the series that forms the 

 mainland ; a circumstance that will appear obvious here- 

 after when the whole of this series shall be described. 



