
New Your y GR Saas EXPERIMENT Srarion. ie 155 | 
--—s-* Table 117 gives the number of days and average milk yield of _ 
_ * of each cow in successive periods of lactation, as also the average 
____ for each breed and the general average ofall. It will be observed 
that there isa gradual increase*in the daily milk yield as the 
_-—s cows advance in age. Of course the evidence is yet limited for 
_ ___ the third and fourth periods of lactation. 
Table 118 gives the average yield, morning and afternoon 
: milking, for each cow during the successive periods of lactation, 
and this table, as will be seen, is far more complete than the 
results hitherto given. It will be observed that the ratio of the 
evening milk is on an average 2.8 per cent less in the evening 
than in the morning. 3 
Tables 119 and 120, giving the relative size and number of milk 
- globules, in the different periods of lactation, from the different 
___ breeds, may be studied with interest. It will be seen that with 
; advancing age apparently the average size diminishes, and as 
shown in table 120 the larger portion of the fat is in the later 
periods of lactation in smaller globules than it was during the 
_ first periods of lactation. 
PB Tables 121, 122 and 123 present the Ronit composition of 
; foods eaten and milk produced by the different animals during 
the entire period of their investigation and while the animals 
_ were in apparent full flow of milk. So soon as an animal had 
dropped off to two-thirds of her maximum yield of milk she was 
not included in the results presented in this table. The number 
of pounds of milk compared with a pound of albuminoids and of 
_ carbohydrates in the food is presented, as also the amount of 
.. _ erude fat in the food as compared with the fat obtained in the 
milk. These tables present an opportunity to observe the effect 
not only of food constituents but of season in the average results 
obtained from a large number of animals, and the column giving 
the average month of lactation, as also the number of animals 
7 averaged, will enable one to make such slight allowances as may 
 - be needed for the effect produced by advancing lactation on the 
one hand, and the reliance which may be pJaced upon the results 
_ obtained in view of the number of animals included in the results. 
_ The diagrams following table 123 present graphically these same 
BS _ results, and it will be interesting to observe that’ between 


























