494 
SEDGWICK AND WINSLOW. 
BACILLUS OF TYPHOID FEVER. 
TJvcE B. 
Seiuks I, 
Race B. 
Series II. 
Nuinlier 
of Tiil'«. 
Avtriine Number Bacteria per c.c 
Unfrozen W.kter. 
71 
TliuweJ Ice. 
i 
■> 
7S 
71 
76 
77 
7!) 
80 
81 
Hi 
84 
87 
88 
8!) 
f>0 
402 
27 
189 
382 
773 
590 
378 
467 
613 
47 
23 
11 
8 
7 
9 
10 
21 
11 
51 
15 
Reduction 
per ceut. 
98.8 
99.9 
99.5 
99.4 
97.1 
98.3 
98.0 
98.8 
98.6 
99.9 
99.9+ 
99.9+ 
99.9+ 
99.9+ 
99.9+ 
99.9+ 
99.9+ 
99.9+ 
99.9+ 
99.9+ 
Average 
Tubes 71-80. frozen Deceml.tT 16, 1898, in U hours- 
tlmwod December 30, after ^ weeks. Miuiaial tempera- 
ture, ( -U° C ). ^ 
Tubos 81-90. frozen December 17, 1898 in 2 hours- 
tu?77-8° cT'^''"' ^^' ''^^'''" " "''''''' ^•"™^' tempera- 
Kace B. 
Series III. 
dumber | Average Number Bacteria per c.c. 
of Tube. 
94 
97 
OS 
on 
100 
1 .'» 2 
157 
158 
MO 
160 
Unfruzeu Water. 
34965 
25445 
285G0 
29085 
33810 
32745 
26880 
15sr,5 
22;;; 10 
2560 
1 595 
15.55 
Thawed Ice. 
180 
00 
60 
165 
365 
25 
5705 
15 
75 
30 
2 
4 
225 
1195 
95 
80 
30 
25 
1 
4 
2 
1 


Reduction 
per ceut. 
99.5 
99.8 
99.8 
99.4 
98.9 
99.9 
78.8 
99.9 
99.7 
99.9+ 
99.9 
99.7 
Aiwnn/e 
99.6 
99.6 
97.9 
98.8 
100.0 
100.0 
~98l 
Tubes 91-100, frozen neceiiibcr '>ft l«Qa • o , ^ 
thawed December 23, afur ^ iL J- - ' 'V - '"'"": 
ture, { 12^ C.). ^'- M"""><il tempera- 
TiiWs 15M60, frozen January P, 18'>0 ;„ 9 1. 
thawed .lanuary G, after 3 J,n,<, m' • ■ }" ^ """rs; 
(-12° C). ■ »"<-r J t/a//.s. Minimal teniperalua.. 
Number 
of Tube. 
Ill 
112 
113 
114 
115 
116 
117 
118 
119 
120 
121 
122 
123 
124 
125 
126 
127 
128 
129 
130 
Average Number Bacteria per c.c. 
Unfrozen Water. 
Thawed Ice. 
52605 
952S5 
63065 
31080 
43470 
47040 
37065 
32890 
54495 
10290 
54705 
69990 
21175 
45150 
01005 
61950 
114030 
90090 
6650 
3622 
1386 
4018 
1270 
1165 
1470 
896 
511 
441 
2935 
2373 
4106 
1466 
2993 
Reduction 
per cent. 
4452 
93.1 
98.4 
95.8 
98.0 
96.3 
96.6 
98.1 
98.6 
98.7 
94.6 
76.9 
92.5 
97.9 
85.9 
92.7 
3633 
94.1 
17042 
85.1 
8127 
91.0 
805 
87.9 
A 
verage . 93.3 
Tubes 111-120, frozen December 23, 1898, in 2 hours; 
thawed December 30, after 1 week. Minimal temperature, 
(-10° C). 
Tubes 121-130, frozen December 24, 1898, in \\ hours; 
thawed December 31, after 1 week. Minimal temperature, 
(-12° C). 
Race B. 
Series IV. 
I 
Number 
Of Tube. 
41 
42 
43 
44 
45 
46 
47 
48 
49 
50 
51 
52 
53 
54 
55 
56 
57 
58 
59 
60 
Average Number Bacteria per c.c 
Unfrozen Water. 
70560 
52290 
38040 
48405 
71505 
44100 
63945 
28245 
91035 
27300 
14140 
37800 
29925 
14280 
39710 
27825 
13685 
12565 
32760 
24570 
Thawed Ice. 
38535 
31605 
28665 
10589 
14458 
10822 
21641 
13541 
19845 
li;340 
6740 
25830 
15995 
5810 
16870 
9486 
5390 
5565 
3307 5 
9345 
Ave^ 
Htge 
45.4 
39.5 
25.8 
78.1 
79.8 
75.4 
66.2 
52.1 
78.3 
58.3 
59.4 
31.7 
40.6 
59.3 
57.5 
65.9 
60.6 
55.7 
0.0 
62^ 
53.8 
Tubes 41-50, frozen December 1, 
thawed December 2, after 2^ hours. 
ture, (-7° C). 
Tubes 51-60, frozen December 8, 
thawed December 0, after 24 hours. 
ture, (-10° C). 
1898, in 2 hours; 
Minimal tctnpera- 
1898. in 2] If""™; 
Mininuil temptTa- 
