620 
Experiment No. 8. 
Pint mixed market milk. 
Bottle immersed in water 5 inches, 2 inches out. 
Cream line; mixed a little, not much, with pipette. 
Water 
temper- 
ature. 
Milk temperature. 
Time. 
Colonies 
per loop 
in agar. 
Remarks. 
\ 
Top. 
Bottom. 
°C. 
°c. 
°c. 
Minutes. 
25 
19 
14.5 
215 
| 
40 
23 
22 
3 
50 
28 
28 
6| 
230 
1 
GO 
32 
,35. 5 
8| 
70 
40 
43 
10! 
80 
49 
52. 5 
13 
83 
52 
56 
14 
86 
55 
59. 5 
15 
2,000 
91 
60 
55 
16j 
2, 100 
94 
63 
68. 5 
17 
(a) 
95 
65 
71 
17! 
(a) 
97 
68 
72.5 
18 
Water boiling. 
100 
69 
75 
19 
(a) 
Scum. 
100 
v 72 
. 78 
19! 
410 
100 
74 
80 
20 
Do. 
a Lost. 
Experiment No. 9. 
Quart mixed market milk. 
Bottle immersed in water to lip. 
Distinct cream line from standing at least five hours. 
Water } 
temper- j 
ature. 
Milk temperature. * 
Time. 
Colonies 
per loop 
in agar. 
Remarks. 
Top. J 
Bottom. 
°C . j 
°C. 
°c. 
Minutes. 
24 
25 
22 
450, 000 
30 
25 
24 
2i 
40 
26 
25 1 
5 
50 
28 
30 
8i 
60 
35 
32 
12 
550, 000 
' 70 
45 
43.5 
15 
550, 000 
80 
52 
52.5 
18! 
82 
55 
57 
19! 
550, 000 
84 
58 
57.5 
21 
550, 000 
85 
87 
60 
57. 5 
21| 
550, 000 
Simmered. 
88 
63 
62 
22f 
425, 000 
90 
65 
64 
23 
175,000 
97 
69.5 
71.2 
25 
13, 000 
Boiling. 
100 
75 
79.5 
1 
28! 
33 
