
New York AGRICULTURAL ExPpERIMENT STATION. 153 
Explanation of the Preceding Tables. 
" In presenting the work done in the several investigations con- 
nected with the test of dairy breeds it has seemed best to present, 
as has been done, the data already secured and reserved its dis- 
cussion to the last, in order that each one for himself may give 
attention mainly to such portions of the work as are of greatest 
interest to him. 
Table 1 presents the dates of birth and of the several periods of 
calving of each animal under investigation. 
é Tables 2, 3, 4 and 5 are continuations from the eleventh annual 
report of the food fed these cows during the investigation. 
_ These tables will be found of great value to those who are 
anxious to study the effect of different kinds of feed and of 
_ seasons upon the milk and butter production of milch cows, and 
_. by comparing the several features of the results given in the sub- 
: - sequent tables, each for himself may with profit study this ques- 
' tion which is of such vital importance to the practical dairyman. 
- Table 6 gives the composition by weight of the several grain 
mixtures fed during the past year, and is practically a continua- 
tion of a similar table published in the eleventh annual report. 
Table 7 gives the chemical composition of the different foods 
' fed to the animals, and the time during which such foods were 
fed. 
' Tables 8 to 11 inclusive, 16 to 21 inclusive, 28 to 30 inclusive, 
_ 84 to 39 inclusive and 46 to 55 inclusive present the constituents 
- In pounds of the food fed to each of these animals during each 
- month of the several periods of lactation, as also the weight of 
- each animal for each month. 
' Tables 12 to 15 inclusive, 22 to 27 inclusive, 31 to 33 inclusive, 
_ 40 to 45 inclusive and 56 to 65 inclusive present for each animal 
_ the milk yield and the composition by per cent and by pounds of 
' the milk for each month of the several periods of lactation. 
| Tables 66 to 82 inclusive, give the number of pounds of each 
~ of the food constituents consumed by each animal during each 
- month of the third period of lactation; also the pounds of milk 
_ yielded by each cow and the percentage and number of pounds 
of each milk constituent for each animal in each month of the 
_ third period of lactation. | 
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