THE DAIRY BREEDS OF CATTLE 263 
been published, giving phenomenal yields of butter. As 
the result of these tests, so-called families of Jerseys have 
sprung up, as the St. Lambert, the Signal, the Combina- 
tion, the Victor, the Tormentor. But a careful review 
of authenticated tests, and especially the results of the 
official tests at the World’s Columbian and at the Louisiana 
Purchase Expositions, show that the excellence is inherent 
in the breed generally, and is not confined to any partic- 
ular line or lines of breeding. Of late years, much atten- 
tion has been paid to the breeding of Jerseys for milk- 
production as well as for butter, and for beauty of form, 
with excellent results. Jerseys giving four to five gallons 
of milk a day are not rare in most herds, and such cows 
are noted for persistence in milking. Records are given 
of individual cows giving 10,000, 12,000 and even over 
18,000 pounds of milk in a year. Yields of butter-fat 
amounting to 600 pounds are common, and there are 
many records of over 900 pounds, the highest record being 
999 pounds, 2.2 ounces, in one year. 
Very interesting are the results from the dairy test at 
the World’s Columbian Exposition at Chicago in 1893, 
and the cow-demonstration tests at the Louisiana Pur- 
chase Exposition at St. Louis, in 1904. In both instances 
the cows were selected and cared for by the American 
Jersey Cattle Club, and it may be assumed, therefore, 
that the best cows in the breed available at that time were 
selected in each case. The test was conducted in each 
instance by a committee of the Association of American 
Agricultural Colleges and Experiment Stations. The re- 
sults show that the Jersey cows can assimilate a large 
quantity of food, give four to five gallons of rich milk a 
day, and that they are persistent milkers; and if conclu- 
sions can be drawn from comparison of the two tests, 
