28 BULLETIN OF THE 



Beyond a point situated in the northeastern part of the tovra of Stock- 

 bridge, half a mile southeast of Mr. Luther Butler's house, near the 

 Stockbridge and Lenox line, the train seems to lose its continuous char- 

 acter, the chloritic schist boulders in the same line to the southeast 

 being few, small, and widely separated. 



The different groups of chloritic schist boulders are represented on 

 the map by red dots. They are not intended to show the exact number 

 of boulders, or their size relatively to the other dimensions represented 

 on the map. The position and width of the different groups, and the 

 comparative abundance and size of the boulders in different localities, 

 are, however, indicated with an approach to accuracy. 



The profile of the section given below the map shows the irregulari- 

 ties of surface over which the principal train passes, as the section was 

 taken very nearly along the course of that train, and is represented 

 without exaggeration of the vertical scale. 



The greatest depth of valley at the crossing of this train is, in the case 

 of the Shaker Valley, 650, and in that of the Richmond Valley, 550 feet. 



2. Width. — The train just described is perfectly distinct throughout 

 its entire length, a distance of about nine miles. The following table 

 shows its approximate width at various points. 



Table of Widths of Principal Train. 



(1.) Crest of West Branch of Richmond Range 430 feet 



(2.) Ten rods west of main road, Richmond 500 " 



(3.) ^ m. N, W. of Mr. Oscar Smith's 310 " 



(4.) Brook draining the Cook Valley 200 " 



3. Comparative Abundance of Boulders. — From the summit of Fry's 

 Hill to a point one fourth of a mile to the southeast of it, the chloritic 

 Bchist boulders are so abundant as to almost entirely cover the founda- 

 tion upon which they rest, while on passing along the train to the south- 

 east, a well-marked, though not perfectly continuous, diminution in their 

 number may be observed. The following table gives the localities where 

 the boulders of this train occur in special abundance. 



Table of Localities specially abounding in Boidders. 



(1.) EafittTu slope of Canaan and Lebanon Range. 



(2.) Both sides of main road, Richmond, 2 ni. north' of R. R. station. 



(3.) Bed of brook, J m. S. W. of North Family of Shakers. 



(4.) Crest of West Branch of Richmond Range. 



(r).) \ in. N. W. of Mr. Oscar Smitli's. 



(f5.) SloHHon and Werdcn farms, Riiliinoiid. 



(7.) Southern slope of Prospect Hill (formerly). 



