6th 9 " | 0.6 | 0.8 | 1.7 | 4.4 | 0.9 | 11.3
7th 9 " | 0.8 | 2.2 | | 4.5 | 0.6 | 13.1
8th 9 " | 0.9 | 1.7 | | 4.9 | 0.8 | 12.6
9th 9 " | 0.7 | 2.4 | | 4.8 | 0.7 | 11.2
10th 9 " | 2.0 | 2.1 | | 5.1 | 0.6 | 10.7
11th 9 " | 1.5 | 2.1 | | 6.4 | 0.4 | 11.1
12th 9 " | 3.8 | 2.8 | | 6.5 | 0.4 | 10.0
-------------+-------+--------+---------+---------+---------+--------

NOTE IV. (p. 124 and p. 131).

NITROGEN AS NITRATES IN WHEAT-SOILS VARIOUSLY MANURED, OCTOBER 1881,
IN LB. PER ACRE (_Rothamsted Soils_).

----+----------------------------------+------+------+------+--------+-------
| | | | | |Excess
| | | | | |over
Plot| Manuring. |1st 9 |2nd 9 |3rd 9 |Total 27|plots
| |inches|inches|inches|inches |3 and 4
----+----------------------------------+------+------+------+--------+-------
| | lb. | lb. | lb. | lb. | lb.
3 |No manure, 38 years | 9.7 | 5.3 | 2.8 | 17.8 |
4 | " 30 " | 9.2 | 4.0 | 1.8 | 15.0 |
16a | " 17 " | 10.6 | 5.0 | 2.3 | 17.9 | 1.5
5a |Ash constituents, 30 years | 12.6 | 7.1 | 4.6 | 24.3 | 7.9
17a | " " 1 year | 10.3 | 7.5 | 3.4 | 21.2 | 4.8
6a | " and ammonium salts, 200 lb. | 16.5 | 7.5 | 4.7 | 28.7 | 12.3
7a | " " 400 " | 22.8 | 11.3 | 5.7 | 39.8 | 23.4
8a | " " 600 " | 21.1 | 13.9 | 7.8 | 42.8 | 26.4
9a |Ash and sodium nitrate, 550 " | 19.7 | 10.0 | 8.2 | 37.9 | 21.5
9b |Sodium nitrate, " " | 16.3 | 20.1 | 17.7 | 54.1 | 37.7
10a |Ammonium salts, 400 " | 14.2 | 11.9 | 7.3 | 33.4 | 17.0
11a |Superphosphate and ammonium salts,| | | | |
| 400 lb. | 17.9 | 9.3 | 3.6 | 30.8 | 14.4
19 |Rape-cake, 1700 lb. | 14.1 | 13.0 | 7.1 | 34.2 | 17.8
2 |Farmyard manure, 14 tons--38 years| 30.0 | 15.4 | 6.8 | 52.2 | 35.8
----+----------------------------------+------+------+------+--------+-------

NITROGEN AS NITRAT