10- BULLETIN 122, IT. S. DEPAETMEKT OF AGRJCULTUKE. 
(7) Volusia silt loam, 3J miles southwest of Naples, N. Y. Depth 
to 8 inches. This soil is of the Glacial and Loessial province and 
is formed from sandstone and shale, with a small portion of material 
from other sources, mixed in by glacial action. This sample was 
taken from a " slashing, " from which the virgin forest of pine, 
chestnut, and oak had been removed 40 years ago. In color and 
texture it is a yellow silt loam. A cultivated field of the same soil 
type near by has produced very poor crops, and this sample would 
therefore be considered relatively infertile. The soil contains 7.5 
per cent stones. This coarse rock material was 82 per cent shale, 
9.5 per cent crystalline, 5 per cent sandstone, and 3 per cent flint. 
(8) Volusia silt loam, subsoil of No. 7, depth 8 to 36 inches. This 
sample contained 32 per cent of stone. Of these 87.5 per cent was 
shales, 10 per cent sandstones, 2 per cent flint, and 0.5 per cent crys- 
talline. 
(9) Marshall silt loam, T. 34 N., E. 54 W., 1 mile north of Edger- 
ton, Mo. Depth to 15 inches. This type is of the Glacial and 
Loessial province, and is derived from loessial deposits. It is nearly 
black in color. The Marshall silt loam is the most important corn 
soil in the United States and supports other crops well. In pro- 
ductiveness it would be graded generally as good to excellent. This 
sample contained no stones. 
(10) Marshall silt loam, subsoil of No. 9, depth 15 to 36 inches. 
This sample contained no stones. 
(11) Gloucester stony loam, 3 miles east of Marlboro, N. H. 
Depth to 8 inches. This soil is of the Glacial and Loessial province 
and is derived from materials mainly from granite, mica schist, and 
other crystalline rocks, ground up and mixed by glacial action. It 
is grayish yellow in color and full of small stones. The sample was 
taken in a field that had been in grass for eight years. No fertilizer 
had been added during that time. The crop was light, though 
adjoining fields, which were well cultivated, produced good crops. 
As a type its fertility is considered low to fair. This sample was 
fairly productive. This soil contained 6.5 per cent of stone. Of this 
amount 16 per cent was amphibolite, 40 per cent mica schist, 31 per 
cent granite, and 13 per cent quartz. 
(12) Gloucester stony loam, subsoil of No. 11, depth 8 to 36 
inches. This sample contained 3 per cent of stone. Of this amount 
56 per cent was mica schist, 32 per cent granite, and 12 per cent 
quartz. 
(13) Carrington loam, Sec. 24, T. 11 N., E. 10 E., Lowville Town- 
ship, Columbia County, Wis. Depth to 11 inches. This is a 
brownish black mellow loam formed from glacial till. It belongs to 
the Glacial and Loessial province. As a type it is of excellent fer- 
