New Yorx AgcricutroraL Exprrment SrAtion. 345 
per cent. The fat averaged 3.70 per cent., and the casein and 
albumen 3.14 per cent. 
(2d.) In no case, did normal milk during the season contain 
less than 1.07 pounds of fat for one pound of casein and albumen 
.or more than 1.33 pounds of fat for one pound of caseiny and 
albumen; while the average of all was 1.18 pounds of fat for one 
pound of casein and albumen in milk. Taking the summary 
in the table above, we find the limits of variation between 1.08 
and 1.27 pounds of fat for one pound of casein and albumen in 
milk. 
(3d.) Arranging the individual results of the season’s work as 
below, we can see how the variations were distributed: 
Pounps or Fat ror Onze Pounp or Casein AND ALBUMEN IN 
Normau Mixx. 



Between | 8etween |Between |Between |Between |Between 
Below /1.05 and| 1.10 and} 1.15 and | 1.20 and| 1.25 and | 1.30 and| AP9ve 
sf et 1.10. 1.15. 1.20. 1.25. 1.30. 1-35, saith 

Number of 
samples of 0 
milk 


(4th.) It appears from our results that, in case of mixed milk 
of herds of cows, the amount of fat seldom falls below 1.10 pounds 
for each pound of casein and albumen. Our previous study of 
the individuals of various breeds confirms this statement. 
(5th.) In normal milk, which contained fat varying from 3.04 
to 4.40 per cent., the casein varied from 1.93 to 3.00 per cent. 
The fat averaged 37.0 per cent, and the casein, 2.48 
(6th.) In no case, did the normal milk during the season con- 
tain less than 1.35 pounds of fat for one pound of caseim or 
more than 1.74 pounds of fat for one pound of casein, while the 
average of all was 1.50 pounds of fat for one pound of caseim 
Taking the summary in the table above, we find the limits of 
44 

