INFLUENCE OF MANURES ON MUTTON. 325 
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I cwt. nitrate of soda, and 10 cwt. of common salt per acre 
and was grazed by cattle. In 1898, and again in 1899, it was 
unmanured, and was grazed by sheep. Having been manured 
in Nov. 1899, it was this season stocked with 8 sheep for six- 
teen weeks, its treatment, in this respect, being the same as 
that of Plot 3 in 1897. The live-weight increase obtained was 
89 lbs. per acre, small in comparison with the yields of the 
older plots, but satisfactory when compared with the yield 
obtained trom Plot 3 in its first season. Plot 11 contains 
some alluvial soil, and is naturally a little better than Plot 
6. The yields obtained ini1898 and 1899, which are given 
in Table I., indicate the extent of this difference in quality. 
Until the end of July the effects of the slag applied in the 
previous November could scarcely be detected, but thereafter 
white clover began to assert itself, and in the later months 
the clover made considerable progress. 
The sheep were not submitted to the valuer, as they had 
been removed from the plot a month before his visit to the 
farm. The hay cn the sub-plot, though tolerably abundant, 
was of poor quality. , 
Variations tn the plots from month to month, 
The figures in Tables I. and II give the sum total of the 
results on Tree Field, but they convey in a restricted and 
inadequate fashion the lessons that may be learned from an 
inspection of the plots. As a consequence of the different 
treatment which they have received, the various plots are 
developing very marked characters. The herbage is different 
in composition, it is differently acted upon by the weather, 
and at all seasons of the year there is such a dissimilarity 
that it is difficult to realise that four years ago the 34-acre 
field was practically a uniform pasture. 
The diagram on the next page may serve to convey some 
idea of the peculiarities which distinguish the different plots. 
It shows by means of columns how the total live weight gain 
per acre for each plot has been made up in the season 1900. 
Each column is composed of five blocks, representing the five 
periods of four weeks over which the experiment lasted, and 
the height of each block shows the gain made during the 
particular month which it represents. 
