Additional Notes oh the 



in which it is found. But in a field at the foot of some 

 felspathose rocks on the eastern side of the bay, a large 

 block or two were found of a white laminar carbonate of 

 lime much mixed up with a beautiful light green fluate of 

 lime, (colorophane ?) having disseminated through the 

 mass threads and seams of galena, the laminae of which are 

 small and brilliant. These blocks were angular, and could 

 not have travelled far. We ascended the hill in search of 

 the vein or bed, but found nothing but bare and whitened 

 surfaces of primary rocks projecting from the ground. A 

 more particular examination, however, would probably 

 be attended with success, for the matrix of the ore is of too 

 remarkable and beautiful an appearance to be easily 

 concealed. It should be sought for in the transition or 

 corboniferous limestone of the place, which is in other 

 countries its usual position. In the specimens we saw, the 

 quantity of ore is small, but its matrix is a j)roniising one : 

 much of the lead ore of England is found in a vein of 

 carbonate and fluate of lime, &c. traversing the same 

 formation of limestone. It is worthy of remark that a vein 

 precisely agreeing with the one now the subject of discus- 

 sion, (with the exception of its not showingany traces of lead,) 

 was observed at Cape Maillard by Mr. Nixon, 66th Regt. 

 for a description of which see page 166 of the first volume of 

 these Transactions. Veins of this description arc considered 

 to be very metalliferous, and are often explored with great 

 advantage. 



The predominating rock on the western side of the bay 

 appears to be a felspathic granite, or one in which the 

 felspar is in excess, the qmirtz less abundant and the mica 

 very subordinate, it is often characterized by containing 

 garnets, and this, in the estimation of Maculloch, is a proof, 



