PLAGUE AND ATMOSPHERIC HUMIDITY.- December, 1902.
DATE. 1 2 3
7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
100
98
78
74
70
68
66
64
62
60
58
56
54
52
50
48
46
9 9 1 2 3 * * * * 2 * * * * * * * * * 8 8 8 10 8 * * *
96
94
92
90
88
86
84
82
80
76
72
RELATIVE HUMIDITY OF ATMOSPHERE PER CENT
PLAGUE CASES PER DAY
44
42
40
50
34
32
80
28
26
24
* 4 4 2 2 == * & * & * N G G
48
46
44
42
40
38
36
22
20
16
14
12
10
8
6
0
܂
DATE. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20|21|22|23|24|25|26|27|28|29|30|31|
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