846 ReEPorT oF THE CHEMIST OF THE 
variation between 1.41 and 1.70 pounds of fat for one pound of 
casein and albumen in milk. 
((th.) Arranging the individual results of the season’s work as 
below, we can see how the variations were distributed. 
Pounpvs oF Fat ror One Pounpb oF CasEIN IN Normat Minx. 
No. of samples 
ilk. 
of m 
BPPLOWIL, BOE, cigiia 0 ou Pk alee as Cao ty boc lkl BUNS IeL te eee 0 
Between! l$35 and’ 140.) (ey ae fakes, Se 2 
Between by 40'and (Papi i yy Pil 2 ie ee 14 
between! l45/and Wi50 i). ouyiyin wn oe ik Bak eels cae 14 
Between! 1.50 and is8u oO 30 
Between 11055 and: (1), 602) 3s) Sales eae ee ee 15 
ect ween 1 GO And \1G65,,. shes) cn Su tane bie oD he eee at 16 
Det ween lL. 65.and W700... sow eee Went eee oe ee 3 
Between 1.70 and 1.75..... .: ha ee rele Seo oes 3S 
AMON ELTON Ge Gilkng 2 waaaln Omran ht a) aE Seca a an 0 
(Sth.) It appears from our results that, in case of mixed milk of 
herds of cows, the amount of fat seldom falls below 1.40 pounds 
for each pound of casein. 
(9th.) In the last three columns of the large table above, data 
are given which show (1) to what extent the casein and albumen 
increase in normal milk, when the fat increases, and 
(2) to what extent the casein alone increases when the fat 
increases. i 
It has been generally held that the casein and albumen of 
normal milk do not increase as rapidly as the fat; in other words, 
that milk, rich in fat, contains less casein and albumen in propor- 
tion to its fat than does milk poorer in fat. Averaging all the 
data secured in the season’s work, we find that when the fat in 
the milk increased one pound, the casein and albumen increased 
0.7 pounds. This would indicate that the fat actually increases 
more rapidly in amount than do the casein and albumen, but this 
statement does not show whether the relative increase is greater. _ ee 
fet T Be 


Ne Se 
a 
~ 
9 ey ss = > 
ada ee TS teh BS ps ed,” ye 3 
7 





