310 
GEOLOGY OF THE FIRST DISTRICT. 
flows north to Freehold. A church and school-house are at this crossing, which is two 
or three miles north of Acra. Vegetable impressions were occasionally seen in the 
grey grits between the two main masses of the red rocks. 
33. On the road from Pleasant-valley to Windham and Prattsville, the base of the mountain 
is observed principally composed of grey grits ; in the middle, reddish and chocolate- 
colored rocks predominate ; toward the head of the valley, the thick-bedded grey grits 
abound, and red shales form the higher hills, capped in some places on the high peaks 
by conglomerate of the coal formation. This distribution of the red and grey rocks 
is general in the Catskill division, and corresponds with Nos. ix. x. xi. xii. of Prof. 
Rodgers’ Reports in Pennsylvania. 
34. Between Prattsville and Delhi, the rocks, when seen in place, were principally the grey 
and chocolate-colored grits. 
35. The valley of the Little Delaware shows the grey grits ; the heights, the red grits and 
shales. 
36. The same characters were observed up the valley of Steel’s brook from Delhi to West- 
Meredith, and up Falls brook to Meredith. Grey grits form the head of the valley by 
the pond at the head of Steel’s brook, on the summit level between the Delaware and 
Susquehannah ; while the hills on each side, and above this summit level, are red grits 
and shales. A quarry of the thick-bedded grey grit is wrought as a building stone, 
between Meredith-centre and West-Meredith. This grey grit lies above the lower mass 
of red grits and shales, and below the upper one. Its strata show the water lines of 
deposition in the oblique lamination, and indicate the directions of the currents that 
deposited them. PI. 6, figs. 3 and 4, illustrate this oblique lamination, which is so 
strikingly exhibited in the grey grits of this division as to be a common subject of 
remark by persons who have no knowledge of the cause. 
37. At the falls of Falls brook, about two miles from Delhi, a fine section of about one hun¬ 
dred and twenty feet of some of the lower red sandstones and shales of the Catskill 
division is visible. 
38. The valley of Fish brook, three miles below Delhi, exhibits the same arrangement of 
strata as the preceding in Steel’s brook. Falls brook, &c. The red shales overlaid by 
chocolate-colored grit, and these by the grey slaty grits, were seen near the saw-mill. 
39. From Delhi to Walton, the same general characters of rocks and order of superposition 
were observed. 
40. From Walton across to Bainbridge on the Susquehannah, across several deep valleys and 
over mountains, the same rocks and order of superposition were observed. Near 
Bainbridge, on the road from Masonville, the strata and fossils of the Erie division 
were found abundantly. They were perfectly similar to those of the Chemung group, 
that occur near Red bridge, in the valley of the Sandberg creek, in the Mamakating 
valley. 
41. From Bainbridge up the valley of the Susquehannah by Unadilla, Oneonta, and thence up 
the Charlotte river to Davenport centre, the rocks of the Chemung group form the 
