44 ©. H. Hitchcock—Labradorite Rocks in New Hampshire. 
Recently* Dr. T. Sterry Hunt has briefly described the various 
localities where these rocks occur, and proposed for them the 
designation of Norian, after Norite (from Norway), a name 
early used for a labradorite rock in Norway ; presenting also — 
further evidence to show the unconformable superposition of — 
the Norian upon the Laurentian. 
The most easily accessible locality is in Waterville, a small 
mountain hamlet in the southern part of the elevated district, 
about twenty miles northeasterly from Plymouth. For the 
convenience of those who may wish to visit this place, it may 
be said that a daily stage runs from Plymouth, the head quar — 
ters of the Boston, Concord and Montreal Railroad, to Greely’s 
Hotel, a house kept open during the summer months. The — 
accommodations are good, and the house is less than two miles — 
distant from the first of the labradorite exposures, the route — 
being by a footpath through the woods, passing a picturesque — 
cataract. Inquiry must be made for the “slide upon Mount — 
” As soon as the end of this so-called slide 18 — 
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Oct., 1869. The facts concerning this great “wash-out,” have been 
well described by Dr. G. H. Perkins, to whose description the — 
those I had previously entertained. 
et coming down from the south side of Mount 
Passaconnaway, or the most southern of the “ Tripyramid,” has 
exposed many ledges that would otherwise have remained con- 
- * This Journal, IL, vol. xlix, p. 180. + Do., p. 158 : 
