~ 
50 BULLETIN 677, U. S. DEPARTMENT OF AGRICULTURE. — 
Collington gravelly sandy loam.—The surface soil of the Colling- 
ton gravelly sandy loam, to a depth of about 6 inches, is a brown 
sand, well filled with small white quartz pebbles. The subsoil, to a 
depth of about 24 inches, is a greenish-yellow gravelly sand. It is 
usually compact and so filled with gravel as to be almost impene- 
trable.. This rests upon a greenish-yellow sticky sandy loam or upon 
the unweathered greensand at a depth of about 24 inches. 
The type occurs as narrow bands and small scattered areas asso- 
ciated with the Collington fine sandy loam. 
Where the type occurs as narrow belts in better arable soils it is 
tilled. Along the margins of areas or on stream slopes it is usually 
left in forest. 
Portsmouth sandy loam.—This type is the same as described in the 
Hartford and Thorofare areas. It occurs only around stream heads 
where drainage has been partially established. Where drained it is 
used for growing general farm crops. _ 
Small areas of the Hyde sandy loam, of the Freneau sandy loam, 
and of fresh-water swamp were also mapped, together with the up- 
land types. They are chiefly or entirely used for pasture and their 
area is not considered in detail in the discussion of the upland soils 
and their crop uses. 
The total and relative areas of the different upland soils is shown 
in Table VIII: 
TABLE VIII.—EH«atent of different soil types, Swedesboro area. 










Tropa. Propor- 
- tion o . tion of 
i Areas J F Areas 
Soil: occupied. q eh | Boil. | occupied. > ste Ai 
area. - area. 
| Acres. | Per cent. | Acres. | Per cent. 
Sassafras coarse sandy loam. - - 932.9 37.5 || Collington fine sandy loam... - 127-3 Sali 
Sassafras sandy loam.....-.-.-- 638. 4 25.6 || Collington fine sandy loam, 
Sassafras gravelly coarse sandy eroded = phases speseeeeaeaes 19.0 Se 
NOOR eee eee echins See 119.7 4.8 || Collington gravelly sandy 
Sassafras coarse sand.-.-....-.-- 117.8 4.8 LoaMmit eS eee esee Seen 22.8 29 
Sassafras fine sandy loam.....- 13:3 .5 || Portsmouth sandy loam....-- 96. 9 3.9 
Sassaitasy OamMeear eases 3.8 a2, ————_|— 
Colts Neck loamy sand... ---- 319. 2 12.8 Totalie 52). see eee 2,490.9 100. 0 
Colts Neck gravelly sandy 
OMT seers ce ie os aieicke wee dio hats 79.8 3. 2 


It will be observed that while there is a considerable variety both 
in the origin and in the texture of the different soils as mapped, yet 
the area as a whole is dominated by sandy and sandy loam soils, and 
that the soils of the Sassafras series are of the greatest importance, 
two types of that series comprising 63.1 per cent of the total area 
mapped. The Colts Neck loamy sand and the Collington fine sandy 
loam are the only types of any extent which do not fall within the 
limits of the Sassafras series. Nearly 76 per cent of the total area 

