60 



intervals between milking being equal in the case of lot II., it 

 is difficult to say. It is worthy, of note, however, that there 

 was much less difference in quantity between morning and 

 evening milk in lot II. than in lot I., although the difference 

 was less marked towards the end of the experiment, and it 

 is to be noted also that in lot II., where the intervals between 

 milking were equal, there was more milk, on the average, in 

 the evening than in the morning. In lot I., on the other 

 hand, with unequal intervals between milking, there was a 

 very considerable difference between the yield in the morning 

 and evening, that in the morning, after the long interval, 

 being not unnaturally the greater. 



As far as the quality of the milk is concerned, the striking 

 point in the results is the high percentage of butter-fat, on 

 the average, in the morning milk of lot II. Although both 

 lots are well above the standard in the morning, the results- 

 show that when the intervals between milking are equal, the 

 morning milk is likely to be much richer in fat than when 

 the interval between evening and morning milking is a very 

 long one. The evening milk of lot I. is very rich in butter- 

 fat, and when the daily yield is taken into account, the milk 

 of this lot is generally richer in butter-fat than that of lot II. 

 It will be observed that the greater the yield the poorer the 

 quality as far as butter-fat is concerned, and this applies- 

 equally to both lots. 



The " solids not fat " are fairly constant in both lots. 



Summary and conclusions. 



(1) Trials to test the effect of equal and unequal intervals- 

 between milking were conducted in May last with two lots, 

 of five cows each, and extended over 18 days. Lot I. was- 

 milked at 6 a.m. and 4 p.m., and lot II. at 6 a.m. and 6 p.m. 



(2) The results show that lot II. gave about 9 pints of milk 

 per day more than lot I. The difference in quantity between 

 morning and evening milk was considerable, amounting to> 

 10J pints in lot I., and small, amounting only to 3 pints in 

 lot II. 



