648 General Notes. [June, 
In the face of these and many other facts, I concluded that the 
South Valley Hill slates must belong to a more recent age than 
the limestones, and as there is a gradual transition from the lime- 
stones into these slates, similar to that found in other portions of 
the State, they must be of Hudson River age. 
lave never observed any deposits of sandstone, of conse- 
quence, within the South Valley Hill belt, and none at all between 
the slates of the South Valley hill and the limestones. 
Limonite ore does occur close to the junction of these slates 
and the limestone, at a point just north of Gulf mill and also 
south of the South Valley hill just west of West Conshohocken, 
That deposit north of Gulf mill is intimately associated with 
the slates of the South Valley hill, but is very different from those 
in proximity to the Potsdam on the north side of the valley. 
Without going further into details, I would say that Frazers 
views and mine are at variance. He finds, I believe, rocks below 
(underlying) the Potsdam sandstone and interposed between it 
and the underlying syenitic rocks. il 
Our observations along the junction of the South Valley H 
slates and the limestones do not agree, and upon these two points 
depends the structure of the succeeding measures south of the 
valley. : 
Unfortunately Mr. Rand has apparently taken the tangled 
in hand and has begun in the middle to unravel a sna ee 
can only be accomplished by careful observation and mee 
extending over a much larger area thana single township.—® 
E. Hall, Grove Hill, Page Co., Va., April 3, 83. 
ANNUAL Report OF THE STATE GEOLOGIST OF NEW J w 
1882.'\—This little volume is brimful of information se 
the neighbor State, contains a complete geological eS the 
smaller maps, one illustrating the geodetic survey, the o t geo 
watersheds of the State; and six lithographs of pron 1882 
logical features. The topographical survey was ne Bearfort 
upon 430 square miles of rugged highland, and in ‘rst time, | 
district three beautiful little lakes were mapped for the h ; 
and two others correctly located. ing 
The red sandstone, ae Triassic, occupies a br d wt a Z 
the State obliquely, and containing 1507 square rr lands, ald : 
plain shut in on the north and north-west by the Hig nd newer 
open to the south and south-east toward the Cretaceous ene 
orth of mE 
minal mo . ! o 
glacial drift and alluvial beds deposited in basi?S T g 
Camden, N. J. wie : 
1 Annual Report of the State Geologist for the year 1882. 
Patterson. 
