On the Rain and Drainaje - Waters at Rothamsted. 
31 
Cable XL VII. — Nitrogen as Nitric Acid in Broadbalk Drainage-Waters at 
diflereut Seasons of the Year, with the Average Amount in Three Years 
(1878-9 to 1880-1), in parts per Million. 
Plots. 
Date of Runsixg. 
2. 
3&4. 
fi. 
6. 
7. 
8. 
9. 
10. 
11. 
12. 
13. 
14. 
IS. 
16. 
17. 
18. 
19. 
Winter (October 15— March 10). 1878-9. 
5-5 
3-4 
4-9 
3-7 
4-9 
4-3 
3-9 
3-5 
6-7 
4.5 
9-9 
5-6 
7-6 
5-2 
6-7 
4-8 
5-9 
4-1 
5-5 
3-8 
6-6 
4-8 
32-9 
18-4 
5-4 
4-2 
4-0 
3-3 
4-9 
4-2 
13-3 
Mean 9 runnings 
8-2 
4-7 
4-5 
4-2 
3-6 
4-8 
6-3 
5-7 
5-5 
4-6i 4-6 
5-7 
21-6 
5-3 
4-9jl0-4 
Spring (March 13— May 30), 1879. 
Mean 3 runnings 
3-6 
3-6 
1-6 
2-9 
1-1 
22-5 
3-7 
39-0 
9-3 
36-6 
19-7 
68-9'45-4'41-8'25-4 
32-7|27-I 21-3jl6-6 
29-4 
11-2 
33-0 
16-1 
9-6 
6-4 
3-6 
1-5 
2-3 
1-5 
40-4 
9-0 
3-7 
3-6 
2-5 
1-9 
14-2i 25-3 
28M 
44-9'34-5 28-0 23-0 
1 1 1 
24-9 
31-6 
6-7 
2-3 
1-5 
30-6 
3-7 
Summer (June 1— September 3), 1879. 
Mean 9 runnings 
2-2 
0-8 
none 
1-4 
none 
4-0, 6-6 
none none 
13-8 
0-6 
31-8 
2-6 
25-8 
5-4 
l8-6!l3'3 
0-9' 0-6 
7-9 
0-4 
10-5 
0-8 
7-9 
1-6 
none 
1-4 
none 
7-7 
0-2 
1-4 
0-1 
0-2 
0-7i 1-4 
1 
3-9 
9-1 
U-4 
5-8 3-7 
1-9 
3-4 
2-9 
0-1 
0-3 
1-8 
0-5 
Autumn (September 4— October 21), 1879. 
1-6 
1-5 
0-5 
1-5 
.. 1 3'3 
4-2 
1-2| 2-3 
1-4 
..| .. 
O-s! !•! .. 
Winter (October 22— March 8), 1879-80. 
'eb. 16, 17, 19 (Mean) 27-3 13-5 | 16'8 16-2! 15-9| 22-1 19-1 17'l|22-7 22-0 20 9 21-1 77-0 15-9 16-0 16-5 33-0 
Spring (March 9— May 30), 1880. 
Vpril 15 
4-6 5-6 16-0 32-2 27-6 66-7|22-9 19-1 21-3 30-7 
6-5 27-0 
Autumn (August 14— October 24), 1880. 
leptember 14 . . . . 
Mean 5 runnings 
8-2 
4-1 
4-8 
5-7 
4-5 
G-9 
6-4 
7-4 
5-4 
24-1 
9-3 
30-8 
13-1 
21-0 
i3-7 
9-1 
9-3 
8-4 
8-6 
7-7 
7-6 
7-7 
7-2 
5- 2 
7-8 
6- 4 
4- 5 
5- 9 
8-8 
7-2 
6'0 
5-9 
5- 6 
7-2 
6- 3 
6-6 
4-7 
4-5 
5-6 
6-3! 11-6 
1 
16-0 
13-7 
8-5 
7-6 
7-l| 6-7 
4-6 
6-7 
5-6 
Winter (October 25— March 11), 1880-81. 
let. 27, 28, 29 (Mean) 
Vlarch 5, 6, 7 (Mean) 
Mean 17 runnings 
6-9 
5-1 
4-6 
3-4 
5-3 
3-6 
5-5 
3-9 
6-1 
3-9 
8-5 
5-3 
9-8 
5-2 
lOM 
5-9 
80 
5-4 
7-7 
4-8 
7-5 
4-5 
7-5 
5-1 
15-4 
11-6 
5-6 
3-1 
6-8 
3-9 
5-o| 8-1 
.3-9|12-l 
4-o'l0-8 
1 
6-5 
3-7 
4-0 
4-2 
4-5 
6-2 
6-6 
5 7 
6-2 
5-8 
5-4 
5-8 
22-9 
4-0 
4-6 
Autumn (August 8— October 27), 1881. 
Mean 4 runnings 
0-9 
8-7 
1-4 
9 5 
1-9 4-1 
13'3; 18-5 
23-o|21-8 
16-1 
16-2 
6-8 
19-6 
2-3 
15-2 
2-4 
14-5 
15-0 
13-1 
0-3 
8-6 
0-4 
10-7 
11-6 
14-9 
5-2 
6-3 
8-6| 11-3 
23-oj21-8 
U-5 
12-4 
8-5 
8-6 
15'0 
13-1 
5-4 
11-6 
14-9 
Average of Three Years (November, 1878 — October, 1881). 
PtOTS. 
2. 
3&4. 
5. 
6. 
7. 
8. 
9. 
10. 
11. 
12. 
13. 
14. 
15. 
16. 
17 & 18. 
Am. 
Min. 
19. 
Mean of 49 (or) 
fewer) runnings] 
7-5 
3-9 
4-2 
5-4 
6-8 
9-3 
12-5 
10-7 
9-0 
7-9 
7-6 
8-5 
19-3 
4-5 
7-1 
4-3 
10-4 
