12 
Bulletin 65. 
PREPARATION OF THE SAMPLES. 
§ 22. Six samples of this soil were taken in the spring of 1897, 
before it was plowed for the planting. These samples were taken 
with care to obtain samples representing the soil. Sections 
8"X 8"X 10" were cut out and prepared for analysis. These sections 
were dried, all lumps being broken by hand from day to day as 
they became dry enough to be rubbed to pieces in this manner. 
When drier, and too hard to be so manipulated, they were rubbed 
in an iron mortar, the mortar being filled so full that pulverization 
did not take place. In order to be able to study the rock fragments 
still remaining in the samples, they were passed through sieves from 
one quarter inch to one twenty-fifth inch mesh. All that passed 
through the one twenty-fifth inch or one millimeter mesh, was pre¬ 
served as the sample of fine earth. The coarser portions, six in 
number, were thoroughly washed and their weight and character 
determined. The samples were designated by the letters A, B, C, 
D, E and F. The successive parts are designated by the subscript 
figures 1, 2, 3, etc. 
SAMPLE A. 
§ 23. This sample was taken from the east end of the plot, 40 
feet east of well A, the worst section of the plot. The sample was 
divided into the following parts: 
Parts. 
Ai.. 
A 2 .. 
A3 .. 
M .. 
A 5 .. 
A6 .. 
Meshes to 
the Square Inch. Character of the Fragments. Per Cent . 
. 4_Quartz, granite, mica, limestone, feldspar. 0.68 
. 9_Quartz, granite, brown sandstone, limestone, feld¬ 
spar . 1.1T 
. 36_Quartz, granite, mica, oxid of iron, limestone, feld¬ 
spar . 2.19> 
.144_Quartz, granite, iron oxid, limestone, feldspar. 4.35 
.196.... Quartz, mica, feldspar. 1.92 
. 625... .Quartz, mica, iron oxid and feldspar. 6.31 
Pine earth.83.38 
SAMPLE B. 
§ 24. This sample was taken 50 feet west and tw T o feet north of 
well A. This sample is from the edge of the gravelly, clay knoll, 
on the north side of the plot, and east of the centre: 
Meshes to 
Parts, the Square Inch. Character of the Fragments. Per Cent- 
Bi. 4... .Quartz, brown sandstone, mica, feldspar. 4.54 
B 2 . 9-Quartz, brown and red sandstone, mica, feldspar.. 3.40 
B 3 . 36 Quartz, brown and red sandstone, iron oxid, feld¬ 
spar . 6.39 
B 4 .144-Quartz, brown and red sandstone, iron oxid, mica, 
feldspar. 6.83 
B 5 .196... .Quartz, mica and feldspar. 3.14 
B 6 .625_Quartz, mica, feldspar... . .11.95 
1 ine earth.63.75 
SAMPLE C. 
§ 25. This sample was taken 45 feet west and three feet north 
