Pietsje-Born in Friesland, April 14, 1882; calved March, 1884.

The feed of all was ground corn and oats, mixed with equal volume of bran, of which four quarts, with cut timothy hay, were fed twice a day. At noon cut timothy and bran. Pasture at night.

To save calculations, we may state some of the results in the following form:

De Bles-was five and one half years old; calved about ten weeks previous to record, and was averaging over forty-seven pounds of milk per day.

Binnema- was a little over four years old; calved about four weeks before, and was giving very nearly forty pounds per day.

Wadman-was five and a quarter years old; had dropped last calf five and one half months previous to date, and was averaging over thirty-eight pounds per day.

Pietsje was two years and three months old; had calved about four months before, and was giving over thirty pounds per day.

Vogeltje was over five years old; calved about six months before the record was made, and was giving over twenty-seven

pounds

per

day.

At one morning and one evening's milking, Johanna give 6.89 pounds of solid matter; Binnema, 5.62 pounds of solid matter, and Vogeltje 2.46 pounds. Johanna gave 1.57 pounds of fat, which is equal to about two pounds of butter per day. Binnema, 1.3 pounds of fat, equals 1.6 pounds of butter, and Vogeltje, .46 pounds of fat equals .6 pounds of butter. gave .75 pounds of fat per day, equals .9 pounds of butter.

Dirke

In making these calculations, butter has been considered as eighty per cent fat.

The following letter from Mr. Hicks gives the history and feed of three of these animals:

PROF. COCHRAN:

WEST CHESTER, PA., October 17, 1885.

Dear Sir:-In relation to the cows you got samples of milk from for analysis, Vogeltje dropped bull calf December 28, 1884, and is due to calve in November again. Binnema dropped bull calf March 31, 1885, and is due in February again. Johanna dropped heifer calf August 7, 1885.

The week you got the milk, the cows were put up to be fed for State fair; they were fed four quarts of corn and oats, ground half and half, morning and evening, with hay all they wanted to eat; at night they were put on pasture.

After you made your analyses and the cows had been fed for a week or two longer, they increased in milk several pounds a day. I am sure the milk was much better later than when you made your test.

Your friend,

JOHN H. HICKS.

Dirke is owned by A. Marshall, and, at date of analysis, was between twenty-one and twenty-two months old; dropped heifer caif about one week previous to date of analysis.

The cows furnishing the samples of milk for the above analyses are the property of T. Walter & Sons, residing near West Chester, Pa. My information concerning the amount of milk was obtained from Mr. Edward Walter. The quantity given, so far as I know, was not measured, but was

stated to me as a mere matter of judgment, and is, therefore, not to be relied upon. Such statistics are of no value, and to indicate their unreliability, I have put a question mark after each.

Sample No. VI was furnished to me as the milk of one Jersey cow, Charlotte.

That the sample is an unfair one I have no doubt. It is mentioned elsewhere in this article. Sample No. IV is the milk of the same animal. In calculating the average composition of the milk of these animals, analysis No. VI was rejected.

Analysis No. I is the milk of a Jersey heifer born May 17, 1882; dropped first calf February 11, 1884; feed not noted.

Analysis No. II, milk of a cow ten years old; feed, four quarts corncob meal and bran, with cut fodder and hay, twice a day.

Analysis No. III, milk of same animal; feed, four quarts of corncob meal and bran, with a very little cut fodder and hay, twice a day; pasture.

Analysis No. V represents the milk of the same animal as Nos. II and III. The first five analyses I regard as fair representations of the milk of three Jersey cows. The analyses show a remarkably high per cent. of total solids and of fat. This I believe must be due to the fact that the animals from which the milk was taken were exceptionally good ones.

In the New Jersey State Agricultural Experiment Station report for 1880, Prof. George H. Cook reports the average composition of the milk of six Jersey cows as found from the results of analyses made upon thirteen consecutive days, beginning November 24 and ending December 6. The herd of Jerseys chosen for this experiment belonged to William S. Taylor of Burlington.

"In order to verify the results of the milk trial, Mr. Taylor's Jersey's trials of a single day each were made with six cows; from Hon. H. C. Kelsey's herd of Jerseys in Newton, Sussex county, and also the same number from Hon. Thomas H. Dudley's herd of Jerseys at Camden. were altogether satisfactorily, as the following figures show:

The results

Specific gravity.

Water.

T. S.

Mr. Taylor's herd (average),... 1.0335 85.28
Mr. Kelsey's herd (one day),. 1.0346 85.49
Mr. Dudley's herd (one day),.. 1.0346 85.12

14.72 5.21 3.67 4.93 0.91 14.51 5.19 3.51 4.82 0.99 14.88 5.20 3.97 4.73 0.98

The general results of the thirteen days' experiments upon six cows from Mr. Taylor's herd of Jerseys, and also upon a herd of six native cows and five Ayrshires, are here inserted.

The results show that each Jersey cow gives about one tenth of a pound of butter per day more than each native cow, and about one fifth of a pound more than each Ayrshire; but it is stated that one of the Ayrshire cows was too old and another too young to be considered as average cows.

VII.

VIII.

IX.

1

Ash, per cent.,

Lactose, per cent.,

4.43

4.155

Caseine, per cent.,

5.545

Solids not fat, per cent.,

11.005

9.307

Specific gravity,

Cream, per cent.,

13

Total solids excreted per

2.023 lbs.