Pleistocene Papers at tlte Rochester Meeting, 221 
cong mountains to the Musconetcong range. This drift sheet 
encloses plentiful bowlders and smaller rock fragments from 
formations lying north of the terminal moraine, and it is be- 
lieved by the author and by Prof. G. F. Wright that it belongs 
to the same epoch of glaciation as the moraine itself. Close 
south of the Musconetcong mountain isolated deposits of till are 
found at Pattenburgh and High Bridge, which contain chiefly or 
only stones derived from adjacent formations, having none from 
the sandstone of the Kittatinny range, although that sandstone is 
plentiful in the drift between the terminal moraine and the Mus- 
conetcong mountain. The Pattenburgh and High Bridge de- 
posits seem therefore referable to local glaciers, probably con- 
temporaneous with the maximum extension of the general ice- 
sheet. 
In discussion of this paper. Prof. R. D. Salisbury and W J 
McGee attributed the extra-morainic drift of this district to a 
far more ancient glaciation than that which formed the terminal 
moraine at the farthest limit attained by the last ice-sheet. If 
the antiquity of the moraine be expressed by unity, that of the 
drift reaching thence southward, as shown by the progress of 
subaerial erosion and by the oxidation of the drift and the decay 
of its bowlders and pebbles, appears to require surely two figures 
for its expression. This drift beyond the moraine has been es- 
timated variously to be from ten to fifty times as old as the mo- 
raine and the drift sheet that extends thence northward. 
Piileohotany of the Yclhnr Gravel at Urulgetun, H. J. By 
Arthur Hollick. Leaves of about twenty-five species of plants, 
representing nearly twenty genera, among which are Magnolia, 
Asimina, Diospyros, and Pei'sea, have been collected from the 
yellow gravel, sand, and loam at Bridgeton, in southern New 
Jersey, the only locality where fossils of any kind have been 
found in that formation. All these species are still living in 
the flora of the southern states, but none of them range north 
of New Jersey. It is the most completely recent collection of 
plants ever found in a fossilized condition. 
Mr. McGee, in discussion, doubted that this deposit could be 
referred to either the Lafayette or Columbia formations, and sug- 
gested that more probably it had been eroded and re-deposited 
during the postglacial epoch, then receiving its fossil leaves. 
Mr. Lester F. Ward, having examined the locality, believed 
