DAIRY FARMING DAIRYING. 



985 



cotton-seed meal, cotton seed, and corn-and-cob meal. There \va.« very little differ- 

 ence in the score of the butter from the 3 rations. 

 On the average composition of milk of pure-bred cows of different breeds, 



F. W. WoLL ( TT7*vo/*.s'/// .s'/(f. Rpt. IHOI, pp. 85-97). — Original analyse^of 97 comjxjsite 

 samples of milk of 82 pure-l)red cows are reported. The average results by breeds 

 are given in the following table: 



Average compoHitioii of milk of pure-bred cows. 



The author has also compiled data from American and foreign sources on the com- 

 position of the milk of the principal American dairy breeds. The following table 

 gives a smnmary of American data as regards fat content, and also the average daily 

 yield of milk and fat: 



Average fat content and daihj yield of milk and fat of pure-bred cows. 



Annual milk and butter production of cows owned by patrons of the 



university creamery, E. H. F.\rrington ( Wiscon.nn Sta. Rpt. 1901, pp. 98-128, 

 tigs. 14). — Data obtained in farm tests of 6 dairy herds supplying milk to the univer- 

 sity creamery, and reported in Bulletin 75 of the station (E. S. R., 11, p. 673), are 

 reprinted with the results of additional work along this line. 



The milk supply of the university creamery from April, 1894, to October, 1901, is 

 shown in tabular form. During the (5 years from 1895 to 1900, inclusive, the average 

 number of patrons varied from 50 to 67, and the annual amount of milk received 

 from 1,890,400 to 2,437,840 lbs. The fat content of the milk from year to year varied 

 between 4.08 and 4.20 per cent. It was highest in October and November, with no 

 marked changes during other months. During the summer of 1901 milk was received 

 from 95 herds, comprising in all 872 cows. 



It wa.« found difficult to secure the cooperation of patrons in the systematic and 

 extended testing of the milk of individual cows, even where the station furnished all 

 the necessary material for sampling and paid the patrons for the extra time involved. 

 Frcjm August, 1897, to April, 1901, 217 cows on 13 farms were tested, the tests repre- 

 senting 135 complete and 98 partial lactation periods. Only 2 or 3 of the herds were 

 tested for this entire period. Some of the data not previously pultlished, showing 



