INFLUENCE OF MANURES ON MUTTON. 331 

of meat follows manuring. But just asthe Tree Field experi- 
ment has afforded an exact means of determining the 
live-weight increase due to the action of manures, so it 
promises to throw light on the specific effects of certain 
fertilisers on the quality, the earliness, and the persistence of 
pastures. Exact information on these points is much wanted, 
and the future developments of the Tree Field plots promise 
to be instructive. 
While the season’s grazing with sheep is the method of 
testing the results that is the main feature of the experiment, 
it may be mentioned that at the end of the summer a con- 
siderable amount of food is still present cn the plots, and, 
in this respect, all are not alike. This ‘“‘roughness” is utilised 
by store cattle, with which the plots are stocked in proportion 
to apparent requirements, and a note is kept of the duration 
of the respective periods of grazing. The results for 1900 
cannot yet be given,as the cattle are still on the plots, but in the 
three past seasons the 304 acres have each autumn maintained 
eighteen breeding cattle for fully two months, and that they 
found food enough is proved by the fact that they came off in 
excellent condition. Allowing 1s. per head per week for 
grazing, the plots are credited with the sums indicated in the 
accompanying statement. 





Number of Davs Grazed by 18 Cattle. p 
: 3 Credit pen yxere 
Plots. at Is. per Head 
1897. 1808. 1899. per week. 
S Gh 
I 7 aes 6 Ae? 
2 at 35 6 ny 2 
3 7 105 4 3 5 
4 7 8 4 16 3 
5 7 52 4 ial 
6 33 32 | 2 Ts 
7 7 8 | 6 18 oO 
g 7 5 6 15 10 
7] 105 6 PX6) B 
IO 7 Bes 6 15 10 


Wm. SOMERVILLE. 
“Th, Jal. MGsorbetON 
