32 INVESTIGATIONS ON ROTHAMSTED SOILS. 
Table 11. — Broadbalk ivheat soils, etc. — Continued. 
NINTH 9 INCHES. 
Plat. 
A T1 "M "11 1 1 lYlfUmTMTlpr 
iidi iiniu ui ill; — , - 
Nitro- 
gen per 
acre 
in 
ma- 
nure. 
Total 
gen. 
Nitro- 
gen as 
ni- 
trates 
per 
mil- 
lion. 
Car- 
bon. 
Per acre. 
Ratio of — 
Total 
nitro- 
gen. 
Nitro- 
gen as 
ni- 
trates. 
Car- 
bon. 
Car- 
bon 
to 1 
nitro- 
gen. 
Nitro- 
gen to 
100 
car- 
bon. 
Lbs. 
Per ct. 
Parts. 
Per ct. 
Lbs. 
Lbs. 
Lbs. 
5 

0. 0566 
0.29 
0.225 
1,700 
0. 87 
6,758 
4.0 
25.1 
6 
43 
.0325 
.82 
. m 
976 
2.46 
5,677 
5.8 
17.2 
7 
86 
. 0355 
1.43 
.1(17 
1,066 
4.29 
5,01(5 
4.7 
21.3 
8 
129 
.0318 
2.04 
.174 
955 
6. 13 
5, 226 
5.5 
18.3 
Average (all plats). 
.0391 
1.15 
.189 
1,174 
3.44 
5,669 
4.8 
20.7 
TENTH 9 INCHES. 
5 

0. 0571 
0. 19 
0.258 
1,714 
0.57 
7,745 
4.5 
22.1 
6 
43 
.0332 
.72 
.183 
997 
2. 16 
5,493 
5.5 
18.1 
7 
86 
.0332 
1.46 
.175 
997 
4.38 
5.253 
5.3 
19.0 
8 
129 
.0265 
1.88 
.135 
795 
5.64 
4,052 
5.1 
19.6 
Average (all plats) . 
.0375 
1.06 
.188 
1,126 
3. 19 
5,636 
5.0 
20.0 
Table 12. — Broadbalk wlieat soils sampled in October, 1893— Nitrogen and car- 
bon in fine, dry soil as pounds per acre (residts condensed and summarized from 
the extended Table 11). 
FIRST, SECOND, AND THIRD DEPTHS (27 INCHES). 
Plat. 
9b 
10a 
10b 
11 
12 
13 
14 
Annual manuring. 
Farmyard manure since 1884 
Farmyard manure 50 years 
Unmanured 
Unmanured since 1852 
Full minerals 
Full minerals and ammonium salts 
do : 
do 
Full minerals and sodium nitrate 
Sodium nitrate only 
Ammonium salts (no minerals since 1844) 
Ammonium salts ( no minerals since 1850) 
Phosphates and ammonium salts 
Phosphates, sodium, and ammonium salts 
Phosphates, potassium, and ammonium salts 
Phosphates, magnesium, and ammonium salts 
Full minerals and ammonium salts (autumn) 
Full minerals and sodium nitrate 
I Full minerals and ammonium salts, transposed 
I in alternate years. 
Rape cake 
Per acre. 
Nitro- 
Total 
Nitro- 
gen an- 
nually in 
manure. 
nitro- 
gen. 
gen as 
nitrates. 
Carbon. 
Pounds. 
Pounds. 
Pounds. 
Pounds. 
200 
8,095 
56 
59 
71,317 
200 
9,031 
68 
14 
85, 761 

6,339 
21 
60 
51,598 

6,436 
17 
11 
52,520 

6,401 
19 
12 
52,268 
43 
6,546 
32 
(58 
53, 969 
86 
6,614 
42 
71 
54,595 
129 
6,818 
55 
28 
58,112 
43 
7, 294 
42 
55 
62,451 
43 
6, 896 
61 
54 
57,857 
86 
6, 925 
49 
20 
59, 724 
86 
(>, 892 
52 
49 
57,273 
86 
(5,977 
51 
13 
59,611 
86 
7,38(5 
51 
78 
(5(1,975 
86 
6,849 
49 
r»l 
(5(1.318 
86 
7,203 
56 
15 
(50,294 
86 
7,383 
39 
23 
64,690 
86 
6,972 
76 
94 
58,056 
1 86 
| (5,993 
48 
43 
59,461 
\ 7, L63 
59 
52 
59, 883 
93 
7,606 
60 
60 
68.023 
