26 BULLETIN 677, U. S. DEPARTMENT OF AGRICULTURE. 
a favorable locality in southern New Jersey, a detailed map of the 
soils and the crops grown upon them was made in the vicinity of | 
Hartford, Burlington County, N. J., in July and the early part of 
August, 1914. 
The Hartford area is located along the line of the Amboy Division 
of the Pennsylvania Railroad about 12 miles east of Camden. It is 
adjacent to Rancocas Creek and about 5 miles south of the Delaware 
River. The area mapped covers about 34 square miles, or 2,259.1 
acres. It lies within the area of the soil survey of the Camden Area, 
-N. J., completed in 1915. 
The Hartford Area occupies a somewhat dissected portion of a 
relatively flat-topped terrace along the lower course of Rancocas 
Creek. The surface of the land rises from the level of the stream in 
a southwesterly direction to an altitude of 90 feet at a distance of 
nearly one-half mile from the creek. The area mapped is divided 
into an eastern and a western division by the deep-cut channel of 
Parkers Creek which flows across it between steep bounding walls, 
through a flat-bottomed, marshy valley. 
The altitudes along the railroad, which forms the southern bound- 
ary of the area mapped, range from 40 to 50 feet above tide level, 
gently rising toward the center of the upland to an extreme elevation 
of 80 feet at a point about one-half mile north of Hartford and of 90 
feet about three-fourths of a mile northwest of Masonville. Aside 
from the steeper slopes along the banks of Parkers Creek and toward 
Rancocas Creek, the surface of the area.is rolling to gently undulat- 
ing. Some minor streams have cut small valleys through the up- 
land and their courses are in some cases bordered by narrow swampy 
flats. Generally the surface drainage of the area is well established. 
Small depressions in the surface of the upland might be TERETE by 
the installation of tile underdrainage. 
SOILS. 
The Hartford area les within the marl! belt of central New Jersey. 
All of the surface materials are underlain at varying depths by beds 
of marl ranging from a loose, marly sand to a rather stiff, black 
marl. The rolling upland is covered by more recent deposits form- 
ing a part of the more elevated terrace intermediate in altitude 
between the broad terrace which borders the Delaware and the up- 
lands to the south. The terrace covering varies in thickness from 5 
or 6 feet down to a thin veneer over the underlying mar] formations. 
East of Parkers Creek the marl formations either reach the surface 
or are so thinly covered that they form the deeper subsoils and thus 
give character to the soils mapped in that section. 
In consequence, the soils of the rolling upland in the western part 
of the area mapped consist chiefly of the Sassafras loam and sandy 
