GEOLOGY OF THE WHITE MOUNTAIN DISTRICT. 1 53 



N. and an abrupt face to the S. The dip of the rocks, too, where this can be made 

 out, is ahnost always from 20° to 80^ to the North, the N. W., or the N. E. 



The same granite which appears at Chocorua, in 'the Green Hills, and all along 

 through Conway, is found at Kiarsarge village, and in the lower part of the mountain 

 itself. 



On the road from Conway Corner to Knowles pond in Albany, skirt- 

 ing the base of the mountains, we find only the Albany granite. There 

 is quartz in this rock on the ridge near D. Allard's. If we take the road 

 along the outlet of Knowles pond, we see in the south-east corner of the 

 town, south of the other road, a precipice of the Albany granite perhaps 

 400 feet high. The hill south of J. C. Kenniston's and Knowles pond is 

 composed of the Conway granite. This region has one peculiar topo- 

 graphical feature: there are several hills scattered over it, usually having 

 a southerly precipitous slope. This structure may be due to rock com- 

 position, or to the peculiar way in which granite is eroded ; but there is 

 scarcely any difference between those composed of the Conway, Albany, 

 or Concord granites. It is necessary, therefore, to visit each one to 

 determine its specific character. The next hill, nearly south from Ken- 

 niston's, on the line between Albany and Madison, and north from J. 

 White's, is composed of Concord granite, and is outside the limits of the 

 Pemigewasset series. We have no evidence of the existence of the 

 eruptive granites east of the railroad in Madison. 



]\It. Chocoriia. One will observe an interesting order of rocks in as- 

 cending Mt. Chocorua. Starting with the Concord variety near Whitton 

 pond, we next find as thoroughly characteristic Conway granite as is ever 

 seen among the mountains on the hill between Whitton and Knowles 

 ponds, by J. C. Kenniston's. Between this and J. Piper's, whence we 

 commence the ascent of Chocorua, the rocks are concealed. There are 

 two ways of ascending from Piper's. The more usual course consists in 

 following the ravine a little west of north in a direct course for the peak. 

 On this route no rocks show themselves for a long way. The other 

 course is to pass due west from Piper's up the long southerly spur. This 

 route meets the path from J. Tasker's, north of Chocorua pond. Six 

 hundred feet higher than Piper's house there is a fine-grained granite, 

 slightly gneissic in appearance. Two hundred feet higher is the unmis- 

 takable Conway granite. On reaching the south end of the spur, we 

 VOL. II. 20 



