242 



ILLINOIS STATE DAIRYMEN'S ASSOCIATION. 



DOLLY 



EVA 



JANET 



Lady 

 Pietertje 



a. m. p. m. 



a. m, p. m. 



a. m. p. m. 



a. m. p. m. 



4.60 4.84 



3.38 3.66 



4.19 4.37 



3.16 3.67 



4.38 4.42 



3.43 3.67 



4.20 4.22 



3.21 3.33 



4.51 4.47 



3.48 3.65 



4.40 4.44 



3.42 3.6S 



JOCK 

 a. m. p. m. 



May 3.43 3.66 



June 3.51 3.71 



July 3.88 3.80 



VARIATIONS IN SOLIDS NOT FAT. 



Table 6. Total yield of solids not fat in pounds per month, morn- 

 ing and evening milk. 



JOCK DOLLY EVA JANET t>.^^^^. 



Pietertje 

 a. m. p. m. a, m. p. m. a. m. p. m. a. m. y. m. a. m. p. m. 



May .....41.98 35.34 32.01 25.99 26.85 24.18 33.63 26.89 52.51 43.70 



June 29.91 26.33 31.77 26.27 24.28 21.32 33.15 27.90 44.39 38.64 



July 4.32 5.89 27.81 25.68 20.42 19.36 27.29 25.31 35.79 33.78 



With one exception the yield of solids not fat is greatest for the 

 morning milking, and that exception is with Jock in July, whose milk 

 yield for that month is higher during the shorter period. This excep- 

 tion is notable, not only because it is the only exception, but because 

 the excess yielded during the shorter periods amounted to nearly 25 

 per cent. It will be noted that Jock in going dry reverses nearly every 

 principle established by the other cows. That this is due to individ- 

 uality and not to the fact of going dry may be seen by a study of the 

 records of Lady Pietertje for October. The following table is prepared 

 in order to learn whether this excess in favor of the morning corres- 

 ponds with the increased time involved: 



Table 7. Yield of solids not fat calculated in pounds per hour, 

 morning and evening milk. - 



JOCK DOLLY EVA JANET P-^t^^t" 



a. m. p. m. a. m. p. m. a. m. p. m. a. m. p. m. a. m. p. m. 



May 104 .104 .079 .076 .069 .073 .083 .079 .130 .128 



June 071 .080 .081 .079 .062 .065 .085 .085 .114 .117 



July 012 .020 .071 .078 .051 .057 .070 .077 .089 .099 



Nine of the above instances indicate a tendency to a greater hourly 

 manufacture of solids not fat during the shorter period, but the differ- 



