GEOLOGY or THE LAKE DISTRICT. 605 



to extend to the top of the mountain. It is also seen farther west, on a 

 path used for cHmbing the mountain. 



A strip of Albany granite has been noted upon the west side of the 

 area. From the top of the western spur, next South Tamworth, Prof. 

 Vose brought specimens of this granite. On climbing the mountain from 

 N. B. Hoyt's, on the line between Moultonborough and Sandwich, we find 

 this rock in its relations to others. First is the Lake gneiss, dipping 80° 

 E. ; then the porphyritic or spotted granite, about one hundred feet thick. 

 This is covered by a black felsitc, perhaps two hundred feet thick, and 

 that in turn is capped by a breccia. The Albany rock is also found 

 farther south, near the Ossipee falls. On the east side we find it north 

 of J. Hobbs's, nearly a mile west of Ossipee lake; and on the road up 

 Lovell's river into the very heart of the mountains, the rock is rather 

 intermediate between the Conway and Albany varieties. There may be 

 some of this rock on the north side of Mt. Whittier. 



The Conway granite is also conspicuously present. From the house 

 of S. C. Abbott, a mile south of Moultonville, to the end of the road 

 under the highest Ossipee mountain, this variety predominates in all the 

 ledges. It is well seen on the ridge north of Moultonville. I under- 

 stand that this variety underlies the Albany, as in the White Mountains. 

 For this reason, and also because large blocks of the latter are common 

 about the lower end of Dan Hole pond and other places on the south- 

 east side of this area, I anticipate the discovery of the Albany rock in 

 place in Ossipee. Near J. Hobbs's are large boulders of a very interest- 

 ing labradorite porphyry. Nowhere else has anything been found that 

 shows the labradorite crystals so finely. It is probably in place on Mt. 

 Whittier. This area affords an excellent opportunity for the study of 

 these eruptive rocks, since it is comparatively small, easily accessible, and 

 what I have done can hardly be dignified with so full a title as a recon- 

 110 is sane e. 



The Moose Mountain Area. This lies between the counties of Carroll, 

 Strafford, and Belknap, occupying, in order from the east, Parker, Bald, 

 and Moose mountains, Mt. Major, Cropple Crown, Mt. Molly, Devil's 

 Den mountain, Mt. Bet, Birch hill, and Mt. Eleanor. Moose mountain is 

 largely a felsite, passing into sienite. It is everywhere fine-grained, and 

 reminds one slightly of the Albany granite. The very summit is com- 



