JOURNAL 
OF THE 
PtOYAL AGRICULTURAL SOCIETY 
OF ENGLAND. 
I. — On the Amount and Composition of the Rain and Drain- 
age-Waters collected at Rothamsted. Part III. By J. B. 
Lawes, LL.D., F.R.S., F.C.S. ; J. H. Gilbert, Ph.D., 
F.R.S., F.C.S. ; and R. Waeington, F.C.S. 
CONTEXTS : 
Part III. — The Drainage \Vaters from Land cropped and manured. , 
1. The Experimental Field (p. 2). 
2. The Composition of the Drainage-Waters (p. 11). 
(a) Influence of the Character and Stage of the Kunning 
(p. 15). 
(V) Influence of the Character of the Manure, and Time 
of Year (p. 21). 
3. The Quantity of Nitrogen lost by Drainage (p. 43). 
Summary and Conclusions (p. 66). 
Part III. — The Drainage Waters froii Land Cropped 
AND Maitored. 
In the first paper on the Rothamsted Field Experiments, pub- 
lished in this 'Journal ' in 1847, it was shown that a consider- 
able part of the nitrogen applied as manure was not recovered 
in the increase of the crop produced.* Later determinations of 
the quantity of nitrogen remaining in the soil after a long course 
of manuring showed that only a comparatively small proportion 
of the missing nitrogen could be accounted for by accumulations 
within the soil.f The conviction gradually increased that the 
* See also the following more recent Rothamsted Reports in this ' Journal ' 
— " On the Growth of Barley by dififcrent Manures, continuously on the same 
Land; and on the position of the crop in rotation,'' 1857, pp. 524, 528-531 ; and 
" Report of Experiments on the Growth of Barley for 20 years in succession on 
the same Land," 1873, pp. 328-331. Also, " On the Annual Yield of Nitrogen 
per acre in Different Crops ; " ' Report of British Association,' 1858. 
t See the Paper " On the accumulation of the Nitrogen of Manure in the 
Soil ; " ' Report of British Association,' 1866. 
VOL. XYm. — S. S. B 
