1883. oT Trans. N. ¥. Ac. Sci. 
groups of shallow basins. The depth of these varies from a half an 
inch to 3 inches, sometimes reaching 15 inches, and their diameter 
from a few inches up to 3 or four feet. In the bottom of these basins 
lie many pebbles, partly those which have been loosened from the 
conglomerate, and partly less rounded chips which have been flaked 
up from the bottom, apparently by the action of frost. 
So hard is the rock that it is rare to find any deep grooves. The 
scratches are mostly very shallow, rarely + or $ inch in depth, though 
often very numerous, long, and parallel. Very shallow and broad 
troughs, a half to one inch in depth, and several inches in width, gen- 
erally occupy the polished areas and produce a gently undulating 
surface. 
The direction of the strie varies a few degrees on either side of 
northeast, as shown by the following observations noted : 
Sash W. 
S. 29° W.—abundant, very long, one-sixteenth of an inch in depth, 
counting 15 to a foot. 
SAR W- 
S. 46° W.—abundant. 
S.47  W. 
Sens’) W. 
and a few. + inch in depth, S. 75° W. and S. 86° W. In following a 
long scratch southward, there seemed to be a tendency to curve more 
and more toward a point nearer the west. 
The gap immediately below the Point is occupied by great rounded 
heaps and even hills of coarse till, made up of angular blocks of the 
conglomerate and sandstone. Ina lower gap further to the southward, 
crossed by the road to the Point, a finer drift occurs, which was appa- 
rently not stratified, but, where cut by ravines running down to the 
westward, presented a series of 3 or 4 well-marked terraces. The in- 
terest attached to these observations depends on the fact of the high 
altitude of these till deposits, probably 1,000 feet above the sea, and 
far above the reach of the floods of the Champlain period. I had not 
the time nor opportunity to give them the thorough study necessary 
to unravel their true meaning. 
I am indebted to Mr. John H. Caswell, of New York, for the follow- 
ing notes which he kindly made on the glacial strie, near the north- 
ern end of the Shawangunk range, at and near Lakes Mohonk and 
Minnewaska. At this point, the trend of the range is from a little 
west of north to a little east of south. Lake Mohonk seems to occupy 
an irregular cleft with precipitous walls, and the horizontal surfaces 
of conglomerate adjacent to the lake are beautifully polished and stri- 
ated in many places. Lake Minnewaska lies on the top of the range, 
