56 



exhibited in very steep, and somewhat disturbed dips in the lime- 

 stone, for a short distance beyond tiie termination of the moun- 

 tain. It afterwards becomes more regular, and may be discovered 

 running for many miles in a nearly straight course, passing a 

 little to the east of Greenville. Between this point and the turn- 

 pike, we fail to follow it in consequence of the difficulty of pro- 

 curing distinct exposures of the strata; but about a mile north- 

 east of the turnpike, we perceive an anticlinal axis, ranging 

 somewhat parallel with and northwest of Long Pond, and coin- 

 ciding so nearly in direction and position with this of Jenny Jump, 

 as to warrant us in regarding it as a portion of the same line of 

 elevation near its northeastern termination. Were this axis pro- 

 longed yet further to the northeast, it would constitute one long 

 and nearly straight axis with that which approaches it from the 

 northeast, through the centre of Pochuck Mountain ; but as we 

 have already shown that the latter subsides near Munroe, we 

 have a space of several miles along which their continuity is 

 interrupted. 



Adverting now to the synclinal basins, included between this 

 main axis of Jenny Jump and the chain of axes previously traced, 

 lying to the southeast of it, we discover the limestone to form one 

 general trough, in the valley of the Pequest, between Greenville 

 and the Alamuchc belt of the primary. But passing the Andover 

 turnpike, this trough runs into tv/o, on account of the interposed 

 short anticlinal axis, prolonged from Pimple Hill. Between the 

 anticlinal axis and Alamuche, the southeastern dips are observed 

 to occupy, as they frequently do, a much wider belt than the 

 northwestern one, the latter being by far the steepest. Whether 

 farther towards the southwest, between Jenny Jump and the 

 ridges east and south of the little village of Vienna, the limestone 

 of this tract may not be disturbed from the simple synclinal 

 arrangement which it has near Alamuche, in consequence of one 

 or more short axes of elevation extending into it from the spurs 

 of Scott's Mountain, is a question not readily answered, owing 

 to so large a portion of the surface of the limestone being hid 

 from view, first by the Great Meadow, and southwest of this, by 

 the large accumulations of diluvium in that quarter. 



That such short axes do disturb the limestone near Scott's 

 Mountain, is, however, highly probable, even from the few dips 

 disclosed. 



