264 THE BREEDS OF LIV E-STOCK 
each with the same number of cows, selected in the same 
manner, and under like conditions, it is that in the eleven 
years between these tests the Jerseys had increased largely 
in flow of milk, and in the production of butter. 
The records of the Jerseys in the ninety-day test at the 
World’s Columbian Exposition at Chicago, June-August 
29, 1893, give the following summary of results for the 
twenty-five cows entered : 
Tora Lss. AVERAGE Per | Tora Lss. 
MiLk Cent Fat BurtEeR 
Grand total - «| 78,4888 4.7844 3,516.1 
Average a cow got 2,939.6 4.784+ 140.6 
Daily average a cow . 32.6 1.56 
Most of the cows had been in milk one to three months 
and one at least five months prior to the beginning of the 
test. 
The records of the Jerseys in the 120-day cow-demon- 
stration test at the Louisiana Purchase Exposition at St. 
Louis, June 16-October 13, 1904, give the following 
summary of results for the twenty-five cows entered: 
Torav Las. Per Centr Lps. or Las. OF 
MiLk or Far Fat BurTtTER 
Grand total : 124,524.2 4.666-+ 5,810.7 6,841.6 
Total average a cow 4,981.0 4.666-++ 232.4 273.7 
Daily average a cow 41.5 1.9 2.3 
The cows averaged sixty-nine days in lactation at the 
time the demonstration began, so in reality at the close 
of the test, the cows, on an average, had been in milk 
