368 CATTLE 



under, to qualify she must produce 7.2 pounds of fat in seven 

 consecutive days. Calving at three years, the cow must produce 

 8.8 pounds of fat in seven days. Calving at four years, the cow must 

 produce 10.4 pounds of fat in seven days. Calving at five years 

 or over, the cow must produce 12.0 pounds of fat in seven days. 

 If the cow calves at a period between either of these ages, every 

 day of increased age adds to the requirements of the year .00439 

 of a pound of fat. Only bulls having four or more A. R. O. 



FIG. 158. Cattle dealers in the market at Purmerend, Holland. Dutch cattle are 



blanketed in the spring when first put on pasture, after the style shown in the 



picture. From photograph by the author 



daughters are eligible for entry in the Advanced Registry. An 

 A. R. O. daughter is one that has been entered in the Advanced 

 Registry on an official record. 



The Holstein-Friesian cow as a producer of milk, so far as 

 quantity is concerned, leads all breeds and occupies a class by 

 herself. Wonderful reports have been published since 1885, when 

 private tests received much attention. At that time Clothilde 1 308 

 H. H. B. was credited with a year's milk record of 26,021 pounds 

 2 ounces. Following that record, Pietertje 2d 3273 H. H. B. 

 made a private test of 30,318 pounds 8 ounces of milk, a record 

 that stood unbeaten for many years. Semiofficial testing has pro- 

 duced many remarkable yearly records, of which the following are 

 most conspicuous up to June, 1919. 



