1901-2.] Plague Research Laboratory of Government of India. 141 
Attacks. 
Deaths. 
Case- 
Mortality 
per cent. 
Cases which had plague actually evident 
at time of inoculation, or which de- 
veloped it the same day, 
43 
21 
48-8 
Cases which developed plague on 1st day 
after inoculation, ..... 
40 
23 
57-5 
„ „ 2nd ,, 
40 
22 
55-0 
y> > ? ? ; 3rd , , 
38 
21 
55*3 
,, „ ,, 4th ,, 
27 
10 
37-0 
,, „ „ 5th ,, 
37 
18 
48-6 
„ „ „ 6th ,, 
26 
10 
38-5 
,, ,, ,, 7th ,, 
29 
14 
48-3 
„ „ „ 8th ,, 
24 
9 
37 5 
,, ,, ,, 9th ,, 
24 
15 
62-5 
,, ,, ,, 10th ,, 
30 
9 
30-0 
Total within the first ten days after inocu- 
lation, 
358 
172 
48-04 
Cases which developed plague subsequently, 
566 
230 
40-6 
Total plague cases among the inoculated, . 
924 
402 
43-5 
Total plague cases among the uninoculated 
portion of the population during the 
same epidemics, ..... 
5079 
3726 
73-3 
We have here records of over 6000 attacks of plague, with 
a case-mortality in the inoculated of 43*5 per cent., and in the 
uninoculated of 73 - 3 per cent. If Calmette’s contention were 
correct, we should see a case-mortality of over 73-3 per cent, among 
those who were inoculated either with the plague symptoms already 
manifest, or who developed plague within the next few days. But 
what, on the contrary, do we find ? According to the table, we see 
that on no occasion does the case-mortality even approach to such 
a figure ; even those inoculated with the disease already manifest 
have a case-mortality of 48 ’8 per cent, only, instead of 73 3 
per cent. 
It appears that in these statistics we have a sufficiently large 
body of trustworthy evidence to enable us to set aside Calmette’s 
warnings — founded as they are on laboratory experiments on 
animals only — and to encourage us to inoculate all persons during 
a plague epidemic, whether they have been exposed to infection or 
not. One is further encouraged in this by the opinion of almost all 
