166 The American Geologist. September, 1893 
Geological Societt of America. 
On the Limits of the Glaciated Ann in New Jersey. By 
Prof. Albert A. Wright, Oberlin, 0. Southward from the 
so-called terminal moraine traced and mapped fifteen years 
ago by Cook and Smock, of the New Jersey Geological Sur- 
vey, from Staten Island northwest and west through northern 
New Jersey, the glacial drift or till is found to extend to 
an extreme limit of the ice-sheet 15 to 20 miles in front of 
the moraine. The extra-morainic drift, which has been 
termed a "fringe" of the great drift sheet, is nearly continu- 
ous, though thin, upon this belt from the Watchung mountains 
and country north of Somerville westward to the Delaware 
river and onward in Pennsylvania ; hut eastward from the 
Watchung trap ridges it is very scanty or wanting. Its mater- 
ial is mostly of local derivation, and such portions as have 
been carried several or many miles are yet nearly all referable 
to rock outcrops less distant than the north line of the state. 
Angles in both the extreme boundary of the drift and in the 
moraine show that the ice-sheet was lobate. reaching farther 
in the Hudson and Delaware basins than on the intervening 
highlands. The general parallelism of the drift border with 
the moraine, and the features of the early outermost drift 
and of the somewhat later drift on the north, were regarded 
by the author as evidence that the glaciation of this area was 
continuous and geologically brief. 
South Mountain Glaciation. By Prof. Edward H. Wil- 
liams, Jr., Bethlehem, Pa. Oriskany pebbles and boulders, 
identified by their fossils, were selected as the criterion of the 
extent of glacial transportation in the region of the Saucon 
valley and South Mountain, near Bethlehem, Pennsylvania, 
where the extent of the till as a fringe south of the so-called 
terminal moraine is found to be 22 miles. At West Bethlehem 
the till is \2 feet thick, underlain by 22 feet of gravel and 
sand which have the "flow and plunge*' stratification of tor- 
rential and varying currents. 
Extra-morainic drift inNew Jersey. By Prof. (i. Freder- 
ick Wright, Oberlin, (). The fringe of attenuated drift 
reaching beyond the moraine in Pennsylvania, as described by 
Prof. II. ( '. Lewis and the author, is now found to be well de- 
