Deposits, Limestone Creek 15 



than that recorded, but from the altitude and latitude of the 

 place it is not improbable that this approximate determina- 

 tion may be found to be correct within reasonable limits, 

 the latitude of the caves being about 37° 7', and the altitude 

 3000 feet above sea-level. 



Cave No. 3.— Dry Cave. 



This is situated close to No. 2, in the same bluff, and is 

 probably connected with it by narrow orifices. The interior 

 caverns are more lofty, and the stalagmital fioors quite dry, the 

 scenery being similar to No. 2 Cave, and the general direction 

 parallel to the strike of the beds it perforates. The entrance 

 is very flat, and at a higher level than No. 2. 



Stony Creek Caves. 



These are, so far as I could examine them, unimportant ; 

 flat, low-roofed orifices, through which the flood-waters of 

 Stony Creek find their way, and are of limited extent, being 

 apparently younger than the Limestone Creek caves. And 

 in regard to the latter, it is probable that they are not 

 greater than Pliocene age, and have been hollowed since the 

 partial denudation of the once superincumbent porphyries, 

 for, as previously stated, the mud conglomerates within the 

 caves are made up of rounded waterworn fragments of the 

 rocks found in situ. I was unable to find anywhere in the 

 whole series of calcareous deposits evidences of cavities 

 which might have existed and have been filled up by mineral 

 constituents during any consolidation of the mass prior 

 to the deposition of the porphyries. There are certainly 

 numerous small veins of calc spar, but no break in the general 

 continuity of the beds. The greater hollowing out of the 

 caves on the Limestone Creek are, I think, to be accounted 

 for by. the more lengthened periods of exposure to subaerial 

 influences and the percolation of acid-laden waters; the 

 Stony Creek calcareous deposit having been more recently 

 laid bare by denudation of the porphyries. So far as a 

 superficial examination would enable me to judge, I think 

 the marbles at this place will prove of considerable com- 

 mercial value, the texture and colour being excellent, and 

 the beds more homogeneous than at the Limestone Creek. 

 However, this is a matter for determination by commercial 

 enterprise, and outside the objects of this paper. 



