DATTIY COWS. 



!37 



yield of milk is decreasing more rapidly than before, the 

 quality is generally improved to some extent, the variation 

 being, as a rule, within i per cent. Variations of several 

 per cents of fat may sometimes occur from day to day, or 

 milking to milking, in the milk from single cows; variations 

 amounting to i per cent are common. Herd milk varies 

 much less, the percentages of fat on subsequent days being 

 as a rule within two tenths of one per cent, and only excep- 

 tionally near one per cent. 



RESULTS OF TESTS OF DAIRY BREEDS 



Conducted by American Agricultural 

 Experiment Stations. 



Averages yor ail Breeds and Lactation Periods. 



Jersey 



(Guernsey 



Holstein 



Ayrshire 



Short Horn 



Devon 



.American Hol- 

 derness 



Total 



94-7 

 82.8 



74-7 

 78.5 

 78.7 

 94.0 



76.0 



174 

 15.8 

 21.5 



21.5 

 19.4 

 20.5 



20.1 



