Extra-Morainic Drift in New Jersey. — WrigJd. 213 
county, from the 700 feet level just described. But it is most in- 
structive to observe that, aside from this stream, the region about 
Little York is absolutely free, not only from northern bowlders, 
but from the gneissoid rocks of the overhanging mountain as well. 
From the preceding account, therefore, it would appear that in 
western New Jersey the terminal moraine did not mark the true 
glacial boundar}^, but that the ice sheet must, for a certain period, 
have extended at least five miles further towards Washington, 
and at least 14 miles south of Belvidere upon the flanks of the 
musconetcong mountain. 
The second group of reported glacial deposits south of the 
moraine are the southern ones, such as those at Monmouth Junc- 
tion, N. J., and at Fallsington, Pa., three miles west of Trenton.* 
As one approaches Monmouth Junction on the Pennsylvania 
railroad from Trenton, it is noticed that as soon as the cit}' limits 
are left behind, the cuts are all in a red gravel, which I assume 
to be the Columl^ia formation. It is a flood deposit from the 
Delaware river, with a ver}- uniform level of from 80 to 100 feet 
above tide. It continues the entire 15 miles to Monmouth Junc- 
tion, and several miles beyond. At the Junction there is a cut 
15 feet deep in a uniformly stratified gravel, characterized by 
white and 3'ellow pebbles, mostly less than an inch in diameter. 
With infinite labor, one faintly, l3ut really, striated, water-worn 
pebble was found, but there is no evidence that it was left in its 
*At the meeting of the A. A. A. S., at which this pai^erwas presented, 
professor Salisbury disclaimed the intention of asserting that an ice-sheet 
had existed as far south as Trenton, or over the center of Hunterdon 
county. The language, which I am sorry to have misinterpreted, is as 
follows: "The points in New Jersey and Pennsylvania mentioned above, 
however, [Oxford Furnace, High Bridge, Pattenburg, New Brunswick, 
Bethlehem, etc.], are not the southernmost localities where glaciated ma- 
terial is known to occur. Striated bowlders have been found both by Mr. 
Chas. E. Peet and the writer at and near Monmouth Junction, nearly 
twenty miles from the moraine at its nearest point, and fully forty miles 
south of the moraine on the same meridian. Glaciated material has also 
been found at Kingston, about half way between New Brunswick and 
Trenton. It has been found in Pennsylvania, about three miles west of 
Trenton, near Falsington. The similarity of the surface material of this 
locality to glacial drift (till) was flrst recognized by professor Smock. 
Striated material has also l)een found at Bridgeport (opposite Norris- 
town), Pa., by Mr. Peet and the writer, at least ten miles south of the 
parallel of Trenton. As at Falsington, the striated material-is here im- 
bedded in claj' of such character that were the localit}' known to have 
been covered with ice, its reference to till would be fully warranted." 
Bull. Geol. Soc. Am. Vol. 3, pp. 179-180. 
. Also: "In its southern extension the ice reached the region of the 'yel- 
low gravel' formation." Ann. Report, State Geologist, p. 107. 
