354 Description of the Bare Hills. 



breaking up the rocks, it would reappear, and afford finer and better 

 specimens than have yet been found. 



Besides the minerals which 1 have pointed out on this line, there 

 is scarcely one yard of the whole distance, in which something does 

 not occur to interest an admirer of mineralogy. 



Returning from this locality to the bridge, we assume the second 

 point of departure or admeasurement from the foot or foundation of 

 the wall, at the N. W. corner at H. The measurements from this 

 point, were traced upon the margin of the Brook, on the north side, 

 the grounds on the south side (its course being W. S. W.) being 

 broken. At the point I, distant from H one hundred and twenty yards, 

 on the south or opposite side of the brook, near the edge of the 

 water, the white Lithomarge may be found in a vein under a small 

 ledge of rocks projecting South Westerly. At this place a little 

 search may be requisite, as the vein is sometimes buried by the 

 debris, that is deposited over it during the swollen state of the stream, 

 occasioned by heavy rains. 



This mineral, it is well known, absorbs a large quantity of water, 

 and in the situation in which it is found at this point, it is usually 

 saturated. In order to preserve the specimens entire, it is neces- 

 sary to wrap them in several folds of wet, or moistened paper, and, 

 as soon as possible, to lay them in the shade, that the water may 

 evaporate slowly — otherwise they fall into numerous small angular 

 pieces.* 



At the distance of one hundred and thirty two yards from H, we 

 are opposite to the gorge or opening of a deep ravine that comes in 

 from the south, and at the head of which flows a small spring 

 of water. The commencement of this ravine is on the west side 

 of the Turnpike road, near, and opposite to the locality of the 

 pitch stone. The descent from this point to the bottom is precip- 

 itous, but is, nevertheless, rendered interesting by the fact that 

 the rocks are completely exposed to view, and contain a variety of 

 the magnesian substances lying in situ. In descending this ravine 

 still farther, we observe in the side of the hill on the right hand, 

 numerous veins of the semi-opal cropping out upon the surface, 

 but much weathered and fragile. The cacholong is occasionally 

 found upon the sides of this hill, and in the ravine. 



■ For the most accurate description of this mineral, See Bergman, Vol. ii, page 161= 



