The following table gives the dates of calving of the three cows, together with their weights and yield of milk at the commencement and termination of the experiment:

When calved. January 1.March 6.
Yield at
calving.
Weight.Yield.Weight.Yield.
Quarts.Cwt.qrs.lbs.Qts.Cwt.qrs.lbs.Qts.
Mr. Smith’s—Nov. 12.178301512 800912
Mr. Pawson’s—Oct. 6.1672012  710614
My own—Oct. 8.18930151210101212

Mr. Smith’s cow lost in weight in nine weeks 84 pounds, being 913 pounds per week, with an average yield of 1212 quarts per day. Mr. Pawson’s lost 28 pounds. This loss, together with the diminished yield of milk, occurred almost wholly after the oats had been withdrawn; her weight on the 6th of February being still 7 cwt. 2 qrs., and her yield of milk 11 quarts per day.

My cow has gained in the nine weeks 56 lbs., being 614 pounds per week, with an average yield of 14 quarts, the diminution being regular. January 1st, 1512; Feb. 4th, 14; March 4th, 1212; making an average yield of 14 quarts per day. The whole loss and gain of weight will be in flesh and fat, the cows having kept up their consumption of food and their bulk.

The weekly account of profit and loss will stand as follows:

s.d.s.d.
Mr. Smith’s cow, average yield fer 9 weeks, 1212quarts per day, at 2d. per quart,147
Deduct loss in flesh, 913 lbs., at 6d.,48
911
Cost of 14 stones hay, at 6d. per stone,70
Profit,211
Mr. Pawson’s cow, average during the first five weeks, 1112quarts per day, at 2d. per quart,135
Cost of 9 stones inferior hay (at 4d. per stone), per week,30
Cost of 63 lbs. ground oats, 4s. 8d.; turnips, 1s. 6d.,62 92
Profit,43
My cow, average yield for 9 weeks, 14 quarts per day, at 2d. per quart,164
Gain of flesh, 614 lbs per week, at 6d.,3112
19512
Cost of food:
Hay, 63 lbs., at 6d. per stone; straw and shells of oats, 1s. 3d.; mangel, 1s.,4612
Rape-cake, 35 lbs.; bran, 1012 lbs.; malt-combs, 1012lbs.; bean-meal, 1012 lbs.,401287
Profit,101012

The richer quality of the manure will probably compensate for the extra labor, cooking, and attention bestowed upon my cow.

With a view of extending the comparison, give particulars of the whole of my cows the weights of which were registered on the 8th of October, and which were still on hand, free from calf, and in a state admitting of comparison. These were bought at a neighboring market in but moderate condition, and were young, having had two or three calves each. A cow in full condition attains her maximum yield in a week or so after calving; whilst those in lower condition continue, by my treatment, to increase their quantity up to about a month after calving.

TABLE.
No.Calved.Greatest
yield
per day.
October 8
Weight.
February 4.March 4.Computed
average
per day
during
Gain,
Oct. 8
to
Feb. 4.
Gain in
weight
per
week.
Weight.Yield
per
day.
Weight.Yield
per
day.
Quarts.Cwt.qrs.lbs.Cwt.qrs.lbs.Qts.Cwt.qrs.lbs.Quarts.Weeks. Qts.Lbs.Lbs.
 1.July28.12920100081010829 10 844
 2.Aug.25.18100011101411101427 16 140634
 4.July28.1882010101510001531 15 1688
 6.Sept.8.16102010201410301425 15 28113
 7.Sept.8.16102011001011001025 13 56223
11.Aug.25.16910920119201127 131228113
Average, 16 12 12271314
TABLE.
No.Calved.Greatest
yield
per day.
October 8
Weight.
February 4.March 4.
Weight.Yield
per
day.
Weight.Yield
per
day.
Quarts.Cwt.qrs.lbs.Cwt.qrs.lbs.Qts.Cwt.qrs.lbs.Quarts.
 1.July28.129201000810108
 2.Aug.25.181000111014111014
 4.July28.18820101015100015
 6.Sept.8.161020102014103014
 7.Sept.8.161020110010110010
11.Aug.25.169109201192011
Average, 16 12 12