THE 
AMERICAN 
JOURNAL OF SCIENCE, &c. 
GEOLOGY, MINERALOGY, AND TOPOGRAPHY. 
—_ ——_ 
Arr. I. Account of the Geology, Mineralogy, Scenery, &c. 
of the secondary region of New-York and New-Jersey, 
and the adjacent regions ; by James Pierce. 
THe secondary region of New-Jersey and of New- 
York situated West of the river Hudson and southeasterly 
of the Highlands extends from North to South about sixty 
miles, with an average breadth of thirty. It exhibits an in- 
teresting diversity of surface, embracing fresh and salt wa- 
ter alluvial, extensive valleys and plains, alternating with 
mountain ranges of considerable elevation; and among a 
variety of interesting minerals peculiar to secondary regions, 
this tract presents many of great utility, and inexhaustible 
in quantity. 
On the eastern border of the abovementioned seconda- 
ry region and adjacent to the Hudson, is observed a promi- 
nent mountainous range. This elevation rises gradually 
from Bergen point, and pursues for sixty miles, a nearly un- 
interrupted course, terminating near the Highlands. In the 
State of New-Jersey, it has an average width of two and 
a half miles, with a summit of table land; from its western 
brow there is a gradual descent to the alluvial valley of the 
Hackensack and Passaic ; on the eastern side it is uniform- 
ly either steep or precipitous. At Wehawk, four miles 
North of the city of Jersey the mountain presents a_per- 
pendicular wall of about 200 feet elevation above the Hud- 
son ; from this summit an extensive prospect appears, of 
the harbour of New-York, of a diversified country, and of 
Vor. 1.....No. 2. 24 
