Tlie History of a Field newly laid down to Permanent Grass. 7 
Table III. — Nitrogen, Phosphoric Acid, and Potash, supplied 
IN THE Manures, and removed in the Hay-crops. 
Quantities per Acre per Annum. 
Per acre per auuura 
Nitrogen 
Phosplioric 
acid 
Potash 
At 0-64 
per cent, 
in dung 
At 0-80 
per cent, 
in dung 
8 years, 1866-1873. 
More ( + ), or less ( — ), in manure than 
lbs. 
35-8 
7-9 
11-5 
lbs. 
44-8 
7'9 
11-5 
lbs. 
12-9 
3-8 
7-9 
IbB. 
29-7 
8-0 
le 
65-2 
47-1 
64-2 
47-1 
24-6 
12:5 
39-3 
50-2 
+ 8-1 
+ 17-1 
+ 12-1 
- 10-9 
8 years, 1874-1881. 
More ( + ), or less ( — ), in manure than 
541 
1-0 
20-2 
67-7 
10 
20'2 
19-4 
16-2 
10 
44-8 
32-6 
0-2 
75-3 
57-0 
88-9 
57-0 
36-6 
15-2 
77-6 
60-8 
+ 18-3 
+ 31-9 
+ 21-4 
+ 16-7 
7 years, 1882-1888. 
In dung 
In superphosphate 
In sulphate of potash 
In guano 
In nitrate of soda 
Total 
In hay removed ........ 
More ( + ), or less ( - ), in manure than 
57-6 
0 
10-4 
71-9 
0 
10-4 
20-7 
91 
0 
47-7 
28-5 
0 
68-0 
72-4 
82-3 
72'4 
29-8 
19-3 
76- 2 
77- 2 
-4-4 
+ 9-9 
+ 10-5 
-10 
Total period— 2Z years, 1866-1888. 
In dung 
In sulphate of potash 
In nitrate of soda 
Total 
More ( + ), or less ( — ), in manure than 
48-8 
31 
14-2 
610 
31 
14-2 
17-5 
9-8 
31 
40-4 
23-0 
0-7 
661 
58-2 
78-3 
58-2 
304 
15-5 
641 
62 1 
+ 7-9 
+ 20-1 
+ 14-9 
+ 20 
