In Table No. 8 is given the results of the period of experimental feeding, combined with the preliminary period as above estimated. The greatest weight of the sheep is given in the second column, as it is a fairer representation of the return for the feed consumed, than the weight at the close of the experiment, when losses had been made, as before explained.

The average cost of 100 lbs. live weight, exclusive of the wool, is $3.11 at the age of thirteen and one-half months, as shown in Pens No's 1, 2, 3 and 4, while the average cost is $4.70 at the age of twenty-five and one-half months, as shown in Pens No's 5 and 6.

A single experiment is not, of course, sufficient to establish a principle of feeding, as variations in the feeding qualities of the animals under experiment may produce greater differences than those above noted. The marked agreement, however, of the results given in Table No. 8, with the experiments here in pig-feeding, in 1866, and in 1868, and with the extensive series of experiments in the feeding of sheep, oxen and pigs, conducted by Messrs. Lawes & Gilbert, in England, would indicate that the difference in the cost of production is owing to a difference in the maturity of the animals.

For the further illustration of this fact, the experiments in pig-feeding, which follow, may be examined. A comparison of the figures in the last column of Table No. 8, will show that on the average, the roots, corn and hay gave the best return; the roots and hay the next best return, and that the corn and hay alone gave the least return on their estimated value.

SUPPLEMENT TO REPORT ON EXPERIMENTS IN SHEEP FEEDING.

Since the above report was placed in the hands of the printer, our wool has been sold in Boston.

The Grade Cotswold wool from the experimental sheep, sold at 44 cents per lb., while the Merino and Grade Merino sold at 33 cents per lb. (all unwashed).

After deducting freight, commissions, &c., say 4 cents per lb., the value of the wool here should be reckoned at 40 cents per b., instead of 30c, the price estimated in the tables.

The following corrections should therefore be made in the tables:

To make the above statements complete, a charge should be made for attendance, and a credit given for the manure produced. As these items cannot be ascertained with sufficient accuracy to add to the value of the experiment, they have therefore been omitted altogether.

M. MILES.