New York AGRICULTURAL EXPERIMENT STATION. 29 
Table 56 gives the relative cost of production of milk and fat 
for each animal and for each breed for the second period of 
lactation. 
Table 57 gives the relative cost of production of milk and fat 
for each animal and for each breed for the third period of 
lactation. 
Table 58 gives the relative cost of production of milk and fat 
for each animal and for each breed for the fourth period of 
lactation. 
Table 59 gives the actual and relative cost of milk, per pound, 
for each animal and for each breed for add periods of lactation. 
Table 60 gives the actual and relative cost of fat, per pound, 
for each animal and for each breed for ad/ periods of lactation. 
Table 61 gives the number of days in each period of lactation 
and the milk yield morning and evening. 
Table 62 gives the yield of milk of each American Holdernéss 
cow, and the per cent. of fat during each month of each lactation 
period. | 
The total milk yield as given in tables 62 to 69, inclusive, may 
not always agree exactly with that given in other tables, as the 
milk was not always weighed and analyzed to the extreme end 
_ of the period of lactation. 
Table 63 gives the yield of milk of each Jersey cow and the 
per cent. of fat during each month of each lactation period. 
Table 64 gives the yield of milk of each Guernsey cow and the 
per cent. of fat during each month of each lactation period. 
Table 65 gives the yield of milk of each Holstein-Friesian cow 
and the per cent. of fat during each month of each lactation 
period. 
Table 66 gives the yield of milk of each Devon cow and the 
per cent. of fat during each month of each lactation period. 
Table 67 gives the yield of milk of each Ayrshire cow and the 
_ per cent. of fat during each month of each lactation period. 
Table 68 gives the yield of milk of each Shorthorn cow and 
the per cent. of fat during each month of each lactation period. 
Table 69 gives the number of days and daily milk yield in 
successive periods of lactation for each cow and the averages of 
each breed. _ 
