340 Oil the Rain and Drainage - Waters at Rothamsted. 
Table XXXIII. — Nitrogen as Nitrates in Dhain.vge-Wateiis, from 
the 60-Inch Drain-Gauge in March and April, 1879. 
Nitrogen as 
I 
Nitrogen as 
Date. 
Rain. 
Drainage. 
Nitrates 
Date 
Rain. 
Drainage. 
Nitrates 
Incliis. 
Inches. 
per 
Inches. 
Inches. 
per 
Million. 
Million. 
jMaicli 1 
0 
1 
091 
14 
2 
AplU 1 
A ■ A1 Q 
lo O 
) . 2 
U • UlbJ 
A . AAA 
0 - 009 
10 0 
, , 3 
0 UOO 
0 
017 
14 
0 
Q 
0-180 
0-010 
10-8 
4 
0-015 
0 
015 
14 
4 
i 
0-008 
0-008 
14-9 
, . 5 
A . AOt? 
0 Uoo 
0 
014 
13 
2 
K 
7 ) 0 
U UbUi 
0-238 
\) 10.) 
< 1 6 
, . 7 
A . A A K I 
V OUOj 
0 
015 
14 
8 
I* 
T ) O 
ij 
* J * 
U D6Z) 
f\ ■ no I 
U \) J-± 
8-1 
11 o 
, , S 
A . AAO \ 
0 
014 
15 
3 
Q 
A . A 1 ^ 
U UiO 
16 7 
, , 9 
A . AA K 1 
U U03j 
Q 
A • AO 1 
U UZl 
iz 0 
, , 10 
A . 1 QO ^ 
0 
014 
14 
9 
, , 10 
A . A'JP 
13-9 
, , 11 
•■ / 
1 1 
A . A1 Q 
U Ulo 
10 4 
, . 12 
, , 13 
A . AAO f 
0 UOo 1 
0 
Oil 
15 
0 
1 O 
1 Q 
, , 16 
A • i 1 Q f 
0-282 
10-3 
1* 
A.I KO ^ 
0 
Oil 
13 
9 
, , 14 
if 1.7^ 
10*0 
l id z 
, , 15 
0-005 J 
, , 15 
A . OA 1 
A . 1 1 1 
U 1 14 
12-3 
,, 16 
O'OOGI 
0 
009 
14 
7 
, , 10 
A . 1 A*:? 
U Wo 
Iz 
, . 17 
•■ / 
J . 1' 
A • 1 AA 
A . AOT 
1 1 . A 
14 0 
, , 18 
0-030) 
, , is 
U UUO 
A . A 1 Q 
14 0 
19 
0 
Oil 
10 
A 
u 
U lob 
A • AO i 
7*2 
1 1 20 
1 
OA 
A . 1 CO 
A . A 1 K 
9-6 
, , 21 
0-0o9) 
> . -21 
A • AA t 
v uu-± 
A ■ AOO 
14 8 
0 
007 
15 
9 
, , 22 
0-027 
0-017 
14-6 
23 
, , 23 
0-156 
0-029 
7-0 
24) 
24 
0-005 
0-014 
14-0 
25 
0-156 
0 
004 
IG 
6 
., 25 
0-111 
0-016 
13-4 
26) 
, , 20 
0-012 
0015 
14-6 
, , 27 
, , 27 
0-020 
0-012 
J4-6 
28 
0-080 
0 
007 
10 
4 
,, 28 
0-002 
0 007 
15-0 
,, 29 
0-083) 
29 
0-010 
0-006 
15-1 
,, 30 
0-250l 
' 
017 
11 
9 
, , 30 
0-025 
0-006 
15-3 
,, 31 
0-094/ 
Wliole \ 
IMonth J 
1-184 
0-257 
14 
2 
Whole \ 
Mouth / 
2-791 
1-376 
11-2 
3rd, 9th, 19tli, 20th, 23rd, and 25th, have a very slight effect on 
the amount of drainage, but each of them temporarily diminishes 
the nitrates in the drainage-water, in some cases to less than 
half their usual quantity. Larger rains, as those of the 6th and 
13th, increase the quantity of drainage as well as diminish the 
proportion of nitrates. 
A study of these results plainly shows that the dry weather 
and wet weather drainages from the soil were quite distinct in 
composition. In dry weather a small discharge took place from 
the lowest layer of the 5 ft. of soil, which alone remained 
saturated ; this drainage-water contained pretty uniformly 
during the period of the experiment about 15 parts of nitrogen 
