darton.] NEW JERSEY. Ill 
380 feet below the surface, at Asbury Park 550 feet below the surface, 
at Toint Pleasant 922 feet. At Freehold it is 1G5 feet below the Lower 
Marl; but here the water does not appear to be satisfactory. The 
dip of this water-bearing bed is about the same as that of the Lower 
Marl bed, or 25 to 28 feet per mile, and the direction of maximum 
slope appears to be nearly due southeast. 
Waters have been found in the Raritan beds in the northern part of 
the county, but there are very few data as to their extent. They sink 
very rapidly to the southeast. The deep boring at Monmouth Park, it 
is claimed, reached the crystalline rocks and found no water below the 
Matawan horizon. The well at Keyport obtains water from a mid- 
Earitan horizon at a depth of 242 feet, and the deeper boring (480 feet 
deep) at Atlantic Highlands and the well to G01 feet at Holmdel prob- 
ably are to the same bed of water-bearing sands. The deeper wells at 
Sea Girt, Asbury Park, and Ocean Grove are thought to be in middle 
and lower beds of the Matawan formation which thicken to the south- 
ward and carry several water horizons. The basal Matawan horizon, 
which is so important to the northward, probably extends across the 
southwestern corner of the county, and even along its southern margin, 
but, as indicated by the well at Asbury Park, it rapidly increases in 
depth. 
EASTERN MIDDLESEX COUNTY. 
This county lies across the border of the Coastal Plain region, to the 
west of which rise the red sandstones and shales of the Newark forma- 
Ition. Near the junction line of the Coastal Plain deposits and the 
Newark formation the crystalline rocks extend near to the surface in 
[ a narrow underground ridge, which reaches the surface at Trenton 
and Staten Island. This feature is shown in section 1 on PI. III. In 
the basal beds of the Raritan series there are water-bearing materials 
I in some areas, but their distribution is irregular. Their extent has 
not been very fully explored. Ooe of the wells at Sayreville obtains a 
good supply of water from this horizon; but as this is one of the very 
few wells that meet with success, I can not base a very far-reaching 
prediction on it. The Perth Amboy wells obtained no water in the 
beds lying on the crystalline rocks, but found a good supply in super- 
ficial beds above. A recent boring at South Amboy found water at 
105 feet in beds low in the Raritan formation. The unsuccessful 
i Jamesburg well was no doubt bored near to the basal beds of the Rar- 
; itan formation, but as the underlying rocks were not reached, the 
- test is not conclusive. In the eastern part of Madison Township 
there is good prospect for water in the beds which furnish water at 
Matawan and Keyport in the adjoining county. The relations of these 
beds are shown in section 1, PI. III. 
EASTERN MERCER COUNTY. 
The geologic relations in this county are similar to those in Middle- 
sex County, as described above. The only wells in the central portion 
