548 



Scientific Proceedings, Royal Dublin Society. 



Eesults 1 arid 2 above are obviously influenced by the unequal intervals 

 between the milkings — fifteen hours between the evening and morning and 

 nine hours between the morning and evening. Professor Crowther 1 has 

 shown that the yield of milk and percentage fat are factors of the intervals 



7r 



o « 



Dune 



~R 21 51 XT S 1 5 Ti 13 )9 SI J3 25 27 



Diagram I. — Representing percentage of fat in morning and evening milk. 



29 Ti i 

 AUG 



after which the cows are milked, and that the total daily yields are not 

 altered by the inequality of the intervals, provided they are not unreasonably 

 unequal. From Table 1 the total daily milk, daily percentage fat, and total 

 daily fat for each cow are calculated, and the returns for three of them are 



1 Charles Crowther, "Variation in the Composition of Cows' Milk," Journal of Agri-, 

 cultural Science, 1905-6, vol. i, p. 152. 



