210 



Variations in Milk. 



[JULY, 



Table II. — Effect of Milking at Equal and Unequal Intervals 

 on the Composition of the Milk (Morning and Evening). 





IVlorning, 



6. 30 A.M. 



Evening, 4 P.M. 



Date. 













Per Cent, of 



Per Cent, of 



Per Cent, of 



Per Cent, of 





Fat. 



Total Solids. 



Fat. 



Total Solids. 



1906. 











June 27 ... 



2-9 



n-88 



4'I5 



12-92 



July 4 



3-15 



I2 - 0 



4-o 



12-78 



II 



3-15 



n'95 



4-0 



12-75 



18 



3-2 



12*15 



4'i 



13-22 



55 2 5 



3'3 



12* I 



4'i 



12-78 



Average 





I2*OI 



4-o 7 



12-89 





Morning, 5.30 A.M. 



Evening, 5.30. p.m. 



August 1 



3*7 



I2-90 



3'9 



12-45 



8 



3'5 



12-38 



3*9 



12-98 



• „ 15 ••• 



3'95 



12-85 



3-65 



12-32 



22 



3"55 



12-35 



335 



11-92 



Average 



3-67 



12*62 



3-70 



12-42 



Difference between morning and evening milk : — 



Unequal Intervals. Equal Intervals. 

 Per cent. Per cent. 



Tar 0-93 ... 0-03 



'Total solids cr88 ... 0*20 



"It is seen that the difference in the percentage of fat between 

 the morning and the evening milk has been reduced from 

 •93 per cent, in July to -03 per cent, in August ; similarly 

 the difference in the total solids has been reduced from '88 

 per cent, to *2 per cent. The total yield of fat is probably 

 not greatly affected by the times of milking, but when milk 

 as uniform in quality as possible is required, it is evident 

 that very unequal intervals should be avoided, a difficulty 

 that is by no means always easy to get over in practice. A 

 comparison of the results at Rosslynlee, with the figures 

 obtained at Springfield where the milking was done at equal 

 intervals, also shows in a marked manner the importance of 

 Ibis factor. 



The, composition of the mixed* milk of the herd at Springfield 



