1901-2.] Plague Research Laboratory of Government of India. 137 
The following table shows the distribution of the inoculated 
and uninoculated, room by room, and the occurrences in each 
group : — 
N umber of 
Room 
Number of Inmates and whether they 
No. 
were Inoculated. 
Attacks. 
Deaths. 
1 ! 
1 
1 not inoculated, ..... 
2 inoculated, ...... 
o j 
1 
8 not inoculated, ..... 
1 
"3 
2 i 
3 inoculated, ...... 
q J 
r 
6 not inoculated, 
4 
"k 
3 1 
i 
4 inoculated, ...... 
1 
A 1 
r 
1 not inoculated, ..... 
1 
1 
4 1 
L 
2 inoculated, ...... 
r 1 
4 not inoculated, . . . . 
"4 
"4 
0 
1 inoculated, ...... 
fi J 
f 
If not inoculated, ..... 
3 
1 
6 1 
l 
5 inoculated, ...... 
7 J 
F 
3 not inoculated, ..... 
i 
7 1 
L 
3 inoculated, . . 
o J 
f 
3 not inoculated , ..... 
8 1 
9 ] 
L 
| 
r 
2 inoculated, ...... 
3 not inoculated, ..... 
1 inoculated, ...... 
4 not inoculated, ..... 
1 inoculated, ...... 
2 
1 
1 10 j 
The inhabitants of the rooms numbered 1 and 10, which 
adjoined one another at one end, but did not communicate 
directly with any infected room, may be excluded from the above, 
as no cases of disease occurred among them. No cases occurred 
in room 8 either, but as it communicated with room number 3, 
in which five cases occurred, its occupants are included in the follow- 
ing calculations. In the eight rooms taken into account, there were 
living fifty-three persons, of whom thirty-two had not been inocu- 
lated, leaving twenty-one who had been thus operated on. Each 
room contained a mixed population of inoculated and uninoculated 
persons, and we find that — 
The 32 not inoculated had. 19 cases, with 12 deaths. 
The 21 inoculated had 1 case, with no deaths. 
If the inoculated had suffered to the same extent as those not 
inoculated, they should have had twelve cases with eight deaths, 
but they only had one case, which recovered. This is equal 
