28 
BULLETIN 202, U. S. DEPARTMENT OF AGRICULTURE. 
impossible in a limited space. A glance at the plot which shows the 
90 per cent alcohol titration and the bacterial count of 116 samples 
indicates clearly that there is no definite relation between them. In 
figure 2 we have plotted in the same way the 80 per cent alcohol 
a o 
. — -—It — .^__^_i i-L 5ri • +. , , 
^^f^^'V* /,000- 9,999 *-|- /0,000-99,999 «-{■» /00,000 -999,999 ^-4000,000-9,999,999 +\f/0,0OO J OOO-$9,999 J 999~\ 
Fig. 1. — Relation o falcohol titration to the bacterial count of milk. Titrations of 116 samples of raw 
and pasteurized market milk with 90 per cent alcohol. 
titration and the bacterial counts. It may be seen that among the 
116 samples plotted there is a wide range in titration of samples 
with low and high bacterial counts. Some samples with a low count 
show a low titration and others a high titration. Among samples 
with a high count some show a low and others a high titration. 
I 
/2.0 
//.0 
<0 
* 
/o.o 
* 
9.0 
Cl 
« 
SO 
\ 
X 
7.0 
e.o 
s.o 
4.0 
ft 
3.0 
St 
2.0 
1 
/.O 
o 
Ssicre/?/^ 
cov/vrs 
; ■** r— i — •; t -^ - * " 
» — * • 
*• ■ - « « » — r ( ■ 
•_ » * e * i 
» ' 1 — " 
Z«?^/?/W/V O/? '00C7E&I64L COC//VrS. 
\* /,0OO-9^99 *j+ /0.090- 99,999 *|* /O0,000 - 999,999 *|> /,000,000 -9.999,999 -^* /0,OOO.OOO-99.999.999'\ 
Fig. 2. — Relation of alcohol titration to the bacterial count of milk. Titrations of 116 samples of raw 
and pasteurized market milk with 80 per cent alcohol. 
Our results indicate that there is no definite relation between 
alcohol titration and acidity unless the acidity is more than about 
2.20. This is shown in figure 3, where 116 samples are plotted ac- 
cording to their acidity and titration with 90 per cent alcohol, and 
also in figure 4, where the 80 per cent titrations and acidities are 
