12 On the Valuation of Unexhausted Manures. 
descriptions of food ; that is to say, the value of the manure pro- 
vided it reached the soil without material loss, and was not 
subject to loss by drainage before the growth of a crop. These 
prices might conveniently be taken as a basis in the settlement 
of claims for compensation for the unexhausted residue of manure 
derived from the consumption of purchased or saleable feeding- 
stuffs, provided the system of valuation now under consideration 
were adopted. 
Anyone acquainted with the cost and the feeding-value of the 
different foods will see, by a glance at the Table, how little con- 
nection there is between either the cost, or the feeding-value, of a 
ton of the different foods, and what may be termed their manure- 
value. 
It is clear, therefore, that it would be quite fallacious to base 
a claim for compensation for the unexhausted manure from pur- 
chased food, either upon the number of tons of food consumed, 
regardless of the description of that food, or upon the amount of 
money expended in its purchase. For example, the cost of a ton 
of undecorticated cotton-cake, and of a ton of locust-beans, would 
be much about the same ; but the Table shows that the estimated 
value of the manure from the consumption of a ton of the cotton- 
cake would be 3/. 18s. 6c?., whilst that from a ton of locust-beans 
would be only 1/. 2s. Hence, the same outlay — according 
as a ton of the one or of the other of these two descriptions of 
food were purchased — would result in a difference of 2/. 16s. in 
the value of the manure thereby brought upon the farm. 
The mannre-value alone should, therefore, be adopted as the 
basis of any calculations of the value of the unexhausted residue 
of manures derived from the consumption of purchased or saleable 
food-stuffs. 
Adopting the manure-value of the different foods, as given in 
the Table, I will now endeavour to estimate, to the best of my 
ability, the value of the unexhausted residue of such manure, 
under various circumstances which are likely to occur. , 
When tlie ordinary manure of the farm is enriched by the con- 
sumption of purchased or saleable foods, the first crop grown 
after the application of such manure will be considerably in- 
creased. The second and third crops will, according to circum- 
stances, be more or less benefited ; but, practically speaking, 
there will be no unexhausted residue left at the end of the 
rotation. 
If purchased food be consumed with a root-crop by the outgoing 
tenant, and he take no crop grown by the manure so produced, 
he should be allowed compensation at the rate of 17s. for every 
20s. of the original manure-value of the food if it have been con- 
sumed on the land, or 16s. if consumed in the yards. If he 
