HOOS FIELD LEGUMINOUS AND WHEAT-FALLOW BOILS. 
159 
Table 85 shows the corresponding figures for the nitrogen existing 
as nitric acid, or rather as nitrates; and here subsoil irregularities 
do not interfere with our grasp of th«' facts, for the nitrates, being 
soluble and migratory, are in a diffused form, and (unlike the organic 
nit rogen) are not much affected by the variations In the mineral com- 
position (proportions of clay, stones, and chalk) of the subsoil. 
Table S5. — I loos field fallow wheat and leguminous land — Samples collected i)i 
1SS1. l<ss.j, iss.;, and /.sav;— Nitrogen cwistingat nitrates. 
ADOPTED WEIGHTS OF FINE DRY SOIL PER ACRE. 
Depth. 
Samples ml 
lected 
March, 1881. 
Samples col 
lected July 
26-31,1882. 
Samples col- 
lected July 
17-26. \m. 
Samples col- 
lected July 
29-Aug. 14, 
1SS.V 
First I inches 
Pound*. 
8,660,000 
8,700, 000 
•,900,000 
1'mtnds. 
8,660,000 
8,700,000 
8,900,000 
:t. <HMI. OIHI 
:$,(MM».IHM» 
8,000,000 
Pou)idit. 
8,060,000 
8,700,000 
8,900,000 
3.IMM), (M)0 
8,000,000 
B, 000, 000 
8,000,000 
2,9<x>,<nn) 
8,760,000 
8,780,000 
8,750,000 
Pounds. 
8,860,000 
8,700,000 
2. Wll. <XK) 
8,000,000 
3,00n.o<Nl 
8,000,000 
3, UN). (NX) 
3,000,000 
2.900.UI0 
8,780,000 
2, 750. (NN) 
2,750,000 
Third 8 inches 
Fourth P inches 
Fifth 11 inches 
Eighth it inches 
Twelfth 9 inches 
2. 650, INK) 
2.7m.ooo 
29,050,000 
2,650,000 
8,700,0% 
20.05O.IM) 
Second !» inches 
Total 
34.400,000 
34.400,000 
NITR< >GEN AS NITRATES. PARTS PER MILLION oF FINE DRY SOIL. 
Depth. 
First 8 inches 
Second !• inches . . 
Third i) inches ... . 
Fourth '.) inches . . 
Fifth 9 inches 
Sixth 9 inches 
Seventh 9 inches . 
Eighth 9 inches 
Ninth inches 
Tenth B inches 
Eleventh 9 inches . 
Twelfth 9 inches . . 
First 9 inches 
Second 9 inches . . . 
Mixture third to 
twelfth 9 inches . 
Samples Samples col- 
collected lected Jul V 35 31. 
March, ixsi. 1888. 
3 = 
— 
00 SO . • 09 
o *« J. <■? 
3 a o Sao. 
••3 — c 
I'.rt. P.rt. 
2.6H 4.51 
1.24 3.07 
1.08 6.3:1 
P.rt. 
3.24 
1.10 
. 06 
1.08 
1.46 
1.78 
Melilotus 
leucantha. 
P.ct. 
1.48 
.67 
.31 
.26 
.37 
.70 
Samples collected July (Samples collected July 
17-26,1883. 29-Aug. 14, 1885. 
P.ct. 
1.28 
.36 
.21 
.33 
.28 
.55 
P. Ct. 
7.88 
2. US 
.85 
.90 
.54 
H 
= 7- 
P - -m I 
P - - - - 
is. 
Vicia 
sativa. 
P.ct. 
11.44;-) 
L0.8S 
8. 91 
8.646 
8.086 
8. 986 
8 64 
8.78 
8. 85 
3 62 
3. :« 
3. 445 
P.ct. 
i •"»' (5 
1 . 52 
.47 
9. 666 
1 . 686 
2. 12') 
2. 385 
1 866 
1 . 565 
1.935 
2. (Hi 
1 . 935 
P.ct. 
:». 7S5 
1.01 
.37 
.505 
.835 
1.475 
1.505 
1.64 
L.86 
1.875 
2. 325 
2. 35 
=5.3 
P.ct. 
6. 16 
1.88 
.95 
72 
.56 
.49 
.59 
.61 
.79 
.73 
.72 
.75 
. 16 
,71 
•t3 2? 
P.cf. 
4.26 
.51 
.31 
.62 
2.36 
3 
4.38 
4.21 
3.86 
3. 
4.03 
3.62 
4.26 
.51 
3.03 
P.ct 
1.61 
.52 
.73 
.98 
1.74 
2. 07 
2.65 
3. 
3 :« 
3.33 
3. 21 
1.61 
.52 
.52 
u. 
o 9 S 
I.I 
8 
P. cf. 
3.29 
.41 
.27 
.27 
.33 
.31 
.19 
.27 
.24 
.22 
.16 
.15 
3.29 
.41 
24 
