¢ h b ee. 
f) 
tap’ i WAS Y 
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New York AGRICULTURAL EXPERIMENT STATION. 299 
4. Changes of acidity due to ripening. 
a. The acidity showed a marked tendency to diminish as the 
cheese became older. 
Some Pracrican APPLICATIONS. 
1. Milk-fat as a basis for purchasing milk at cheese factories. 
a. The method of paying for milk at cheese factories accord- 
ing to the amount of milk delivered, regardless of its composition, 
is unjust to the producers of the better milk. Payment for milk 
on the basis of the fat contained in it is the best method yet 
proposed, mainly for three reasons, (1st) the milk-fat appears to 
exercise a greater influence upon the composition and yield of 
cheese than does any other constituent of milk, and, therefore, 
forms a just basis for estimating the cheese-producing efficiency 
of factory milk; (2d) payment for milk according to its fat 
encourages and induces dairymen to produce a better quality of 
milk; (3d) payment for fat in milk removes any temptation to 
adulterate milk. 
2. Skimming factory milk. 
a. Taking the average factory milk of this State, it is probable 
that it is none too good for cheese-making and that removal of 
cream diminishes both the yield and quality of the cheese. 
6b. It seems probable that, under ordinary circumstances, a 
better money-return can be expected from average factory milk 
when made into whole-milk cheese than when skimmed partially 
and made into butter and skim-milk cheese. 
XIV. COMPARISON OF DAIRY BREEDS OF CATTLE 
WITH REFERENCE TO PRODUCTION OF BUTTER. 
It is the purpose of this report to present and discuss briefly . 
the data that have accumulated up to December 1, 1891, in 
connection with the making of butter from the milk of the various 
individuals of breeds undergoing experiment. This will enable us 
to present the records of one or more individuals of each of six 
breeds for the first period of lactation. We are not yet able to 
give the complete record of four or more individuals of each breed 
‘for the first period of lactation, as we shall Le able to do later. 
Special caution must be given, therefore, in regard to drawing any 
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