302 STRATIGRAPHICAL GEOLOGY. 



isolated band of this rock, tlie dip is N. 50° W. 78°. An argillaceous 

 schist extends from here three fourths the distance up Morse hill, where 

 the argillitic white schist dips 56° N. 42° W. On the south side of 

 Morse hill there are alternate bands of these two rocks, dipping 6o°-8o° 



N. 22°-32° W. 



There is a curious conglomerate west of Rev. C. Coming's, in North 

 Lyman, lying adjacent to the Lyman group, and supposed formerly to 

 constitute a part of it. It resembles a mass of common drift, because 

 the pebbles are so numerous and miscellaneously arranged. They con- 

 sist of both the white and green schists, and dip S. 52° E. The pebbles 

 are mostly of large size, one measuring two feet long and five inches wide. 

 On the top of Mormon hill, nearly two miles north-east of this exposure, 

 I found a very coarse conglomerate, with the strike N. 58° E., lying on 

 the north-west side of clay slates dipping N. 47° W. It is probable that 

 these two exposures belong to the same formation, which runs athwart the 

 Lyman group, and may possibly join a very coarse supposed Helderberg 

 conglomerate in Littleton, to be described presently. Till the very latest 

 moment I had regarded these heterogeneous mixtures as a part of the 

 Lyman group. There is, however, another interesting exposure of the 

 supposed conglomerate at D, Stickney's, to the north-west of the range 

 just mentioned. The strata are greatly contorted, the seams being filled 

 with reticulated veins of white quartz, such as always occur at the bend- 

 ing of a formation in this part of the country. The dip seems to be 

 north-westerly usually, though some incline N. 8° E. 



A trip to Mt. Littleton, in 1876, adds a few items of interest. After 

 passing the slate quarry, there is, first, the diabase range from Fitch hill, 

 then the Lyman schists, by Robbins's and Eastman's, then a broad ex- 

 panse of chloritic schists extending along Mulliken's brook from East- 

 man's, and connecting southerly with the Lisbon group near Partridge 

 pond. Where the road from Mulliken's brook joins the Partridge Pond 

 road, I found a coarse Lyman conglomerate, perhaps the continuation of 

 that at D. Stickney's, dipping south-westerly. The same recurred north 

 of the pond, at G. D. Lewis's, with a south-easterly dip, thus making a 

 synclinal, holding some slates near the water. Either this or the normal 

 Lyman rocks crop out farther south, especially above the mills at Mul- 

 liken's, near the Connecticut river, standing vertically. It appears, there- 



