11 Dec, 1916.J 



Milking E xptrimen t . 



747 



evening it did fall below such a standard, but only just below. On 

 twelve occasions in the morning, however, the milk of the group com- 

 prising Lot II. milked at unequal intervals fell below the 3 per cent. 

 limit, and seriously so. Further, the average percentage of fat for the 

 whole six weeks in equal periods of milking differs only by .25 per 

 cent., whereas, this difference in the case of unequal periods of milking 

 is equal to .93 per cent. The percentage of fat actually produced in the 

 total daily yield is in the two groups practically the same. 



Table LXXVIII. — Average Percentages of Solids Not Fat in 

 Milk for Each of Six Weeks. 



Week eiiiliiiii — 



191J. 

 7th July 

 14th July 

 21st July 

 28th July 

 4th Auf,'ust 

 nth Au.-,nist 



Average for each of six weeks 



Times niilkings wcro under standard 



Highest 



Lowest 



Lot I. 



Milked at 6 a.m. and at 

 6 p.m. 



Lot II. 



Milked at 6 a.m. and at 

 4 p.m. 



Average percentage in total daily yield 

 Total solids not fat in lb. in daily yield 



Solids not Fat. — During the summer of 1911 frequent complaints 

 were made that owing to the drought there was a tendency for the milk 

 to fall l>elow the standard of 8.5 per cent, in non-fatty solids. So far 

 as this experiment goes Table LXXVIII. shows that this was not the 

 case, as in practically all cases the milk was of normal quality. It is 

 only fair to state that in the north the drought was not of such intensity 

 as in the midlands and south. Tlie cows, too, under experiment, as 

 already shown, were receiving a fairly liberal supply of cakes together 

 with vetches or clover cut for them. 



Experiment V. 



On r2th August those cows in Lot T. which, during the previous 

 exi>erinient, had Wen milked at e<|ual intervals were for the following 

 six weeks milked at unequal intervals, and those of Lot II., which had 

 been milked at unequal intervals, wore now milked at even intervals o;' 

 twelve hours each. 



Re.sults. — As regards the actual flow of milk Table LXXIX. shows 

 that the cows constituting Lot I., and nmv milked at unequal intervals. 



