22 
INVESTIGATIONS ON ROTHAMSTED SOILS. 
used at Rothamsted until any further experience indicates the pro- 
priety of &ny modifications, it is desirable that the data from which 
these estimates are derived should be published for future reference, 
and they are therefore embodied in the following- table: 
Table Q.—Broadbalk wheat soils — Resume of data and weights of fine dry soil 
per acre adopted for all plats sampled, and for all depths taken in 1865, 1881, and 
1893 {excepting for the first 9 inches of plats :2a, 2b, and 19, for which see separate 
table). 
[It will be seen that in the case of the first depth the results for plat 2 and 1!) are not brought 
in in taking the average for the other plats, but that for each depth below the first the results 
for plats 2 and 19 are brought in. and that a uniform weight is adopted for each depth for each 
of the three years, 1865, 1881, and 1893.] 
Year. 
| Number of plats. 
Number of samples. 
Stones retained by 
|-inch sieve. 
Average weight per acre. 
Fine soil (dry) 
passing i-inch 
sieve. 
Total fine dry 
soil and stones. 
6 
■ 
"8 
Total soil as 
sampled in the 
field. 
First 9 inches: 
All plats sampled, exclud- 
ing plat 2— 
Actual 
Adopted 
/ 11 plats sampled, excluding 
2 and 19 
Average, 1881 and 1893 . 
Second 9 inches: 
All plats sampled, exclud- 
ing 2 and 19 
Average, 1881 and 1893 
All plats sampled, including 
2 and 19 
All plats, including 2 and 19 . . 
Do 
Average, 1865, 1881, and 
1893 
jl865 
10 
/ 80 
\m 
Pounds. 
534, 971 
523,549 
Pounds. 
2,297,896 
2,592,621 
Pounds. 
2,832,867 
3, 116.170 
Pounds. 
280,924 
601,564 
Pounds 
3,115,221 
3, 718,565 
J 1881 
\1893 
J108 
\ 66 
547, 749 
483,950 
2, 557, 170 
2, 650, 631 
o, 104, 919 
3,134.581 
602,073 
600, 731 
3, 708, 177 
3, 735, 563 
174 
523,549 
2,592,621 
3, 116. 170 
601,564 
3,718,565 
J1881 
\1893 
18 
18 
108 
66 
338,252 
357,278 
2, 708, 505 
% 567, 100 
3,046.757 
2,924.378 
737, 601 
695. 430 
3. 784, 632 
3,619,879 
174 
345,469 
2,654.869 
3,000,338 
721.605 
3, 722, 139 
J 1881 
\1893 
"go" 
21 
I26" 
77 
347, 510 
343,067 
2, 706.473 
2,579,859 
3,053, 983 
2,922,926 
7.33,232 
691,659 
3, 787,500 
3, 617,652 
197 
345, 773 
2,656,984 
3,002.757 
718, 155 
3, 721,113 
1865 
1881 
1893 
~VL 
20 
21 
88 
120 
77 
410, 015 
347,510 
343,067 
2, 703.417 
2, 706. 473 
2,579,859 
3,113,432 
3,053,983 
2, 922, 926 
590, 189 
733.232 
694, 659 
3, 703, 714 
3,787,500 
3,617,652 
3, 715, 740 
285 
365,609 
2,671,321 
3,036.930 
678,643 
Third 9 inches: 
All plats sampled, exclud- 
Average, 1881 and 1893. 
All plats, including 2 and 19 . . 
/1881 
\1893 
18 
18 
108 
66 
194,415 
196, 121 
2, 763, 164 
2, 777, 540 
2,957,579 
2,973,661 
832, 173 
803, 147 
3,790,004 
3, 776,839 
174 
195, 062 
2, 768,617 
2, 963,679 
821.163 
3, 785,010 
J1881 
\1893 
20 
21 
120 
77 
205,828 
188, 555 
2, 750, 600 
2,780,895 
2,956. 428 
2,969,450 
8->\S3l 
807,363 
3, 785,506 
3, 776,842 
197 
199,077 
2,762,441 
2.961,518 
820,440 
3, 782, 120 
All plats sampled, including 2 
All jdats, Including 2 and 19 
Average, 1866, 1881, and 
1893 
1865 
1881 
1893 
11 
20 
21 
88 
120 
77 
243,973 
306,828 
188,555 
2,856,554 
2,750,600 
2, 780, 895 
3,100,527 
2,956,428 
2,969,450 
684,955 
828,831 
807,363 
3,785,513 
3, 785,506 
3,776,842 
285 
212,93? 
2,791,501 
3,(K)4,440 
778,606 
3,; S3, 167 
