?20
of July there were 23 cases of plague with 17 deaths among those not inoculated.
Inoculation was begun on the 5th of June and carried on as follows:-
5th June
1899,
10
inoculated.
17th    „
,,
6
,,
21st    „
,,
22
,,
26th    „
,,
36
,,
30th   „
,,
42
,,
3rd July
,,   
56
,,
6th   „
,,
67
,,
10th   „
,,
49
,,
15th   „
,,
23
,,

Total
311

Neither attacks nor deaths have taken place among the 311 inoculated, up
to date (10th September 1899), and they are still kept under [medical inspection
twice daily.
19.    Mauritius.-The following account of inoculation work in the Island
of Mauritius is compiled from the report submitted by Captain J. S. Stevenson,
I. M. S., to the Director, Medical and Health Department, there, and published
by command of His Excellency the Governor of Mauritius.
The mortality in Port Louis (population 54,000) was above the average
death-rate of the past ten years from the end of March 1899 till the beginning
of November of the same year. Inoculation was introduced in May, but people
did not come forward in large numbers till the end of June, at which time
plague deaths were numerous in the town. The table below, compiled from
Captain Stevenson's report, relates to the period from 1st July to 30th Decem-
ber 1899 inclusive, "a period which corresponds to the most serious rise in the
plague death-rate and its gradual decline to normal." The figures cannot be
used as an exact demonstration of the effect of inoculation, for no census of the
population was taken, several thousand people had left the town, and conceal-
ment of cases to a large extent prevailed. Nevertheless, as an indication, they
are interesting.
Population.
Plague, attacks.
Plague deaths.
Inoculated   ...
6,816
66 (0.96%)
38 (0.55%)
Not inoculated ...
47,184
826 (1.75%)
708 (1.50%)
If the inoculated had suffered to the same extent as the uninoculated, they
ought to have had 119 cases with 102 deaths instead of 66 and 38 respectively;
a reduction of 44.5 per cent. in the case of attacks and 627 per cent. in the
case of deaths in favour of the inoculated.
Although in Port Louis, as a whole, accuracy was not attainable, yet in
certain small groups of persons it was found possible to observe events so closely
that reliable data are forthcoming.
Mauritius Dock Camp.-In this camp live Madrasis and Indian Musal-
máns brought to the island under a labour contract. They live in a dozen or
more barrack-like buildings placed close together, and covering 5 or 6 acres of
ground. Some of these dwellings are double-storied, but all are dark, ill-venti-
lated and insanitary, and 12 families inhabit each block.
The first case of plague occurred on 6th July 1899 and the last on 21st
November.
Inoculation was begun on 1st July and was rapidly completed, almost all
the people submitting on account of the privileges offered. At the end of Sep-