WEEKS.
Curves of Rat and Human Plague.-July 31st, 1903, to August 4th, 1904.
KOWLOON DISTRICT III. YAU-MA-TI.
| 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 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 ·
( 100
96
92
88
84
80
76
72
68
.64
60
Percentage of
56
Infected
52
Rats on Total
48
44
caught.
40
35
32
28
24
20
凹
j
49
Number of
Plague Cases.
WEEKS.
П
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 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 j
16
12
8
4
6
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