301
The month of November in 1902 and 1903 too compare somewhat similarly as here shewn.
Month.
Nov., 1902,
Nov., 1903,
Temperature.
Relative Humidity.
Sunshine.
Rain.
71.5 67.2
74% 62%
150-8
5'400
209-2
1.099
It is seen therefore that the weather during the last two months of 1993 has been cooler, dryer and brighter than in the corresponding months of 1902.
As it is undoubtedly a matter of common observation that the state of the weather bears some relation to the seasonal recurrence of plague, 1 have compiled the following table showing the mean temperature and relative humidity and the total hours of sunshine and inches of rainfall, together with the total cases of plague for each of the months November to February inclusive, which are those in which as experience shows the annual plague epidemics begin. With the exception of the years 1895 and 1897, it will be noticed that as a general rule the brighter, dryer and cooler these months are the less are the numbers of the plague cases at the beginning of the several epidemics.
I also give here for convenient reference a table showing the cases of plague which occurred each month from 1895 to 1903 inclusive.
1895 EPIDEMIC,-44 Cases.
Month.
Plague Cases. Temperature. Humidity. Sunshine.
Rain.
November, ...1894, December, January, ..1895,
?
70.0
60
226.0
0·030
62.4
64
151-0
0.755
"
56.5
75
151.2
0-410
February,
60-2
79
73.6
0.835
כל
Mean or Total, .
0
62.2
69.5
601-8
2-030
1896 EPIDEMIC,-1,204 Cases.
Month.
Cases.
Temperature. Humidity. Sunshine.
Rain.
November,...1895,
5
67.6
December,
12
63.2
... ""
January,.....1896,
19
62.0
February,
125
56.0
8829
63
185-7
0:325
63
117.2
0-200
76
133.8
1-730
85
16-3
27
7-945
Mean or Total, .
191
62.2
71.7
453-0
10.200
1897 EPIDEMIC,-21 Cases.
Month.
Cases.
Temperature. Humidity.
Sunshine.
Rain.
November,...1896,
December,
A
January,..............1897,
February,
HOOO
1
71-7
76
134.0
2.975
62.2
65
167·0
1-290
63.1
80
90.7
2-260
54:2
SO
17.4
1.820
Mean or Total, .
Ι
62.8
75.2
439-1
8-3-15
...
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