106 G 5 . REPORT OF PROGRESS. I. C. WHITE. 



subsequently we had two streams going in opposite direc- 

 tions. 



The D. L. & W. R.R. passes across the low gap thus 

 made in the divide, and the bed of its track at the summit 

 is 1150' A. T. while the real summit at the top of the cut 

 is 25' higher or 1175'; making a fall of (1175'— 860') 315' 

 from that point to the mouth of Salt Lick creek at Great 

 Bend ; while Martin's creek on the other side falls (1175' — 

 700') 475' from the summit to its mouth at Tunkhannock 

 creek, near Mcholson in Wyoming county, just south from 

 Susquehanna. 



Immense piles of Drift material are seen all along both 

 valleys. One mile below New Milford, a very large heap of 

 bowlders, gravel, and sand has furnished the most of the bal- 

 lasting along the D. L. & W. R.R. This gravel bank has been 

 worked back toward the hill for several rods and shows a 

 face of exposure 90' high. In this we see rounded bowlders 

 of every description except metamorphic fragments, none 

 of which I could discover ; commingled with the bowlders 

 are much sand and gravel, often having the appearance of 

 rude stratification. This moraine once extended clear across 

 the valley, but has been cut through by the stream, since 

 on the opposite, or west side of the creek, a huge mound of 

 morainic de'bris is still seen extending westward to the ad- 

 jacent hill at the same elevation as the ballast deposit. 



The rocks of this area belong to the Catsklll system, with 

 the exception of a short and narrow trench, cut into the 

 very top of the Chemung by Salt Lick creek, where it leaves 

 the township at its northern line. But although the top of 

 the Chemung is there above drainage, none of its rocks are 

 exposed, since everything along the valley is concealed by 

 a deep covering of Drift. 



From the village of New Milford in this township I have 

 named a group of sandstones which come in the lower por- 

 tion of the CatsMll, and are in fact the beginning of the 

 Catshlll sandstone series, as follows: (Pig. 20.) 



New Milford section. 



1. Sandstone, massive, (New Milford upper), 40' 



2. Shales, red, sandstone and concealed, 110' 



