GEOLOGY OF THE CONNECTICUT VALLEY DISTRICT. 299 



curved and fragmentary way, the best known localities being upon its 

 north-westerly side. Of these, we have No. 196, near F — 15, dipping 80° 

 N. 42° W., away from and apparently over the conglomerate. No. 195, 

 though disconnected with the range, probably belongs to it. A similar 

 layer is connected with the larger development of conglomerate about F 

 and G — 16, and it seems to cross Smith brook near Steery's house, north 

 of E — 18, and to continue at D — 19. Between D and E — 20, on the 

 south-west side of the conglomerate, is another exposure of the dolomite. 

 No. 202 from Q — 17 is quite interesting. It is more like a limestone 

 than is usual in Lyman, and it makes a right angle in its course. The 

 north-south course lies at the south-west end of a conglomerate exposure, 

 and the bend to the west is connected with the throws of the latter rock, 

 not fully understood. The dolomitic band is about twenty-five feet wide. 

 There is said to be a considerable dolomite between Q — 17 and J. Wil- 

 liams's, nearly along the line of the conglomerate. Next, there are dolo- 

 mite layers at T — 14 and 15, Where the conglomerate has been so 

 terribly thrown about in the neighborhood of Aldrich's, the dolomitic 

 outcrops are abundant, and may be seen on the map. The small con- 

 glomerate mass at U — 9 is accompanied by dolomite, — Nos. 210-212. 



The dolomitic masses not connected obviously with conglomerate may 

 show where fragmentary bits of it are to be found, as at No. 206, near 

 T — II, No. 209, near S — 8, Nos. 207-208, near R — 11. Those south of 

 P — 14, and near L — 8, are not so clearly connected. Those from N — 21 

 and D — 21 may be associated with the Lisbon group. In the eastern 

 Lyman range we find Nos. 191, 192, and ledges near A — 5, close by con- 

 glomerates, and No. 193 by H — 2, somewhat isolated. No. 194 is also 

 in the neighborhood of conglomerate. We have also several observations 

 showing the proximity of the dolomitic band to the conglomerate in Bath. 



The following are a few positions of this dolomite band not elsewhere recorded : 



193, near H— 2, 75° northerly. 210, near V — 7, dip 66° N. 52° W. 



202, near Q— 17, vertical, strike N. 72° W. 212, near U and V— 7 and 8, dip 80° N. 



205. U— II, vertical, strike N. 48° E. 42° W. 



206, near T— 11, dip 68 N. 12° W. 200 feet southof P— 14, dip 62° N. I2°W. 

 209, near S— 8, dip 85° N. 12° W. 



The composition of much of the Lyman schist is indicated by speci- 

 mens from between T — 8 and 9 and P — 10. It is a conglomerate made 



