Extra- Moved nic Dnft in Nein Jersey. — Wright. 215 
2. In the country round about these deposits, and especially 
on the high land to the northward, no signs of glaciation could be 
discovered. From High Bridge northward four miles to White- 
hall, and thence southwesterly towards Grlen Gardner, no signs of 
northern drift or ice-work were detected. Similar search north 
and south of Pattenburg gave the same results, as did also the 
study of adjoining railroad cuts, east and west on both roads ; 
so that we are apparently presented with the spectacle of glacial 
deposits, in a region never invaded by an ice sheet; a matter 
which cannot fail to provoke further investigation. Were it not 
for the emphatic and convincing striation, both of the shale and 
gneissoid bowlders, we might turn with more hopefulness to an 
investigation of the possibilities concealed in landslides, and the 
secular creeping of plastic soil containing rock fragments, upon 
slopes of sufficient inclination in order to account, both for the 
striations of the rocks and the heterogeneous structure of the 
deposit. In the absence or meagerness of knowledge, how^ever, 
upon this subject, and in view of the evidence that farther south 
upon this mountain, the ice-sheet abutted at a level of 760 feet, 
it may be more rational to suppose that over some passes, not yet 
discovered, some fingers of the ice-sheet may have extended for 
a sufficient time to form these limited and sharply isolated de- 
posits. 
Great relative antiquit}' as compared with the moraine to the 
north has been thought to attach to the deposit at High Bridge, 
as evinced by the extreme oxidation, leaching and ferrugination 
of its elements. The facts already stated will perhaps show why 
it possesses these characters. Its materials have never been sub- 
jected to the washing and scouring of a long glacial journey. 
The results of ancient oxidation and kaolinic decomposition are 
still visible in its elements just as they are in the rotting Archfean 
gneiss at its side, which still remains in place. It is also the case 
that the stratified portion of the deposit has been cemented into a 
veritable conglomerate, so tough that blasting was necessary in 
its excavation, by a highly ferruginous cement, whose origin is 
not far to seek. For here, as at Oxford Furnace, the gneiss con- 
tains a considerable proportion of ferruginous minerals, and at 
the High Bridge mines close by, it may be seen graduating into 
a large-grained hornblende schist, lying close to the layers of 
iron ore. The drainage water from such rocks as these w ill in- ' 
