On the Haiti, and Drainage - Waters at Rotliamsted. 19 
Table XLIV. — Alteration in Composition of Drainage-Waters 
from Broadbalk Field during the course of their running : parts 
per Million. 
Date of Collection. 
Plot 12. 
Plot 13. 
Chlorine. 
Nitrogen as 
Nitric Acid. 
Chlorine. 
Nitrogen as 
Nitric Acid. 
1879. 
April 7, 7 A.M 
o 
„ 0 „ 
,. 9 „ .. .. 
„ 10 „ .. .. 
,. 11 „ .. .. 
„ noon 
1 p Ar 
„ 2 „ .. .. 
3 , 
,. 4 „ .. .. 
83-4 
68-6 
58-8 
53-4 
50-2 
47-0 
43-4 
40-0 
37-6 
25-4 
is" 2 
146 
12-6 
11-2 
101-4 
83-6 
70-0 
62-2 
57-8 
54-4 
50-0 
45-4 
43-8 
41-2 
29-4 
20-1 
16-1 
14 -0 
li-5 
April 13, 2 P.M 
„ . 4 „ .. .. 
,. t> , 
65-0 
59-0 
54-4 
26-9 
21-2 
18-2 
79-0 
66-2 
60-2 
34-2 
23-9 
20-7 
,. 10 , 
1 P>i 
..4 45 
68-7 
73 '3 
68-6 
62-3 
169 
17"6 
17-2 
16-2 
67-3 
76 0 
63-8 
65-1 
9-9 
13-4 
16-6 
12-5 
July 1, 10 A.M 
„ DOOU 
„ 2 P.M 
4 . 
„ G „ .. 
„ 8 „ .. 
21-7 
30-1 
33-1 
35- 7 
36- 2 
36-8 
1- 7 
2- 1 
2-9 
2- 9 
3- 4 
3-5 
22- 9 
23- 6 
34-7 
32-6 
30-6 
36-7 
0-5 
0-5 
0-9 
0-7 
0-4 
0-9 
August 3, 8 A.si. 
10 
noon 
„ 4 p.m. 
16-2 
20-2 
22-6 
22-7 
0-6 
0-2 
0-6 
0-6 
18-4 
20-8 
23-1 
25-3 
none 
0 2 
none 
0-4 
1880. 
February 17, 8 a.m. .. 
„ noon . . 
19-9 
21-2 
1 
23-3 
23-3 j 
20-7 
23-0 
20-2 
22-1 
the end of the previous running, the drains being now fed by 
the discharge of a higher layer of soil ; the chlorides also do 
not fall so low at the close as in the previous case, the soluble 
salts having now become more equally diffused throughout 
the soil. 
The drains ran for the next time on May 29 ; they had been 
C 2 
