Compensation for Unexhausted Manurial Values. 107 
influence of the manuring had practically ceased to tell. These 
experiments are fully discussed in the R.A.S.E. Journal, Yol. 63, 
1902, pp. 99-105, and as the continuation of them from then to 
the present date gives results similar to the foregoing, we con- 
sider that we are justified in reducing the period over which 
compensation shall be spread. 
Taking all these matters into consideration, we are now 
agreed that in practice a period of four years over which 
compensation is to be spread, is inconveniently long and hardly 
borne out by experience. Moreover, the farmer’s records 
rarely extend so far back as four years, nor can they be 
adequately checked. 
The desire is evident to have matters of compensation 
promptly settled as between the in-coming and the out-going 
tenant. Accordingly, we are agreed to recommend that a period 
of two years be substituted for our previous one of four years 
over which compensation is to be spread, and we have revised 
our Tables in this sense. 
Manure made under different Conditions. 
We have introduced a further change in our Tables, feeling, 
as we do, that a discrimination should be drawn between 
manure that is made in yards and that obtained by feeding 
direct on the land. It is recognised that when an animal is 
being fed upon the land, the urine, which contains the most 
valuable manurial constituents of the food, is very completely 
absorbed by the soil, without the large loss of ammonia that 
occurs during the making and storage of dung. 
In the case of manure stored in heaps it is on the nitrogen 
that the loss chiefly falls, both through the storage of the 
manure and the washing by rain and loss by drainage which it 
may suffer. 
It would only seem right, therefore, that higher compensa- 
tion should be given for the food that is fed direct on the land 
than for that which is consumed in yards and the manure 
subsequently stored in heaps. 
In our original Tables, as the result of experiments on the 
losses which farmyard manure undergoes in making and 
storing, we reckoned that 50 per cent, of the total manurial 
constituents would be lost under ordinary good farming 
practice before the manure went out on the field. 
We now consider that when the manure is not subject to 
these changes it would be right to allow for 70 per cent, 
of the nitrogen being retained instead of the 50 per cent, 
given in our former Tables. This should apply equally to 
the case of sheep feeding on the land and to bullocks and 
cows on pasture when either class of stock is consuming 
