1901-2.] Plague Research Laboratory of Government of India. 131 
One of the three fatal cases among the inoculated had no 
interval between the inoculation fever and the manifestation of 
plague; the two others had a-pyretic intervals of six and eight 
days respectively. 
The events in each of the twenty-eight families affected were 
noted on ‘ investigation sheets/ one for each household, in which the 
names of every member present at the time of inoculation were 
entered as either ‘inoculated ’ or ‘ not inoculated.’ The occurrences 
in each household being entered on each sheet below the names, it 
was then easy to compile the following table : — 
Ward 
No. 
House 
No. 
Inoculated. 
Not Inoculated. 
Number 
Inoculated 
in the 
Family. 
Number 
of 
Attacks. 
Number 
of 
Deaths. 
Number 
not Inocu- 
lated in 
the Family. 
Number 
of 
Attacks. 
Number 
of 
Deaths. 
1 
8 
4 
1 
1 
1 
1 
63 
3 
2 
1 
1 
1 
67 
3 
2 
1 
1 
2 
24 
1 
1 
1 
1 
3 
1 
2 
2 
1 
1 
3 
15 
2 
1 
3 
3 
20 
3 
1 
4 
1 
1 
3 
29 
3 
2 
1 
1 
3 
39 
4 
i 
1 
3 
1 
1 
3 
42 
1 
2 
1 
3 
48 
5 
3 
1 
1 
3 
49 
1 
5 
1 
1 
4 
7 
1 
i 
1 
1 
1 
4 
8 
2 
l 
1 
4 
10 
4 
l 
1 
4 
12 
2 
2 
1 
1 
4 
1 13 
2 
1 
1 
1 
4 
18 
3 
2 
2 
2 
4 
26 
1 
2 
2 
2 
4 
30 
1 
3 
1 
1 
4 
31 
4 
l 
1 
2 
4 
34 
2 
3 
1 
"i 
4 
35 
1 
l 
1 
1 
1 
l 
4 
53 
2 
2 
1 
i 
4 
80 
4 
4 
1 
i 
4 
84 
5 
5 
2 
2 
4 
89 
2 
1 
1 
1 
4 
90 
3 
3 
1 
1 
Total, 
I 
71 
8 
3 
64 
27 
26 
If one contrasts the fourth and fifth columns, which show the 
numbers of attacks and deaths among the inoculated, with the 
