Curves of Rat and Human Plague.-July 31st, 1903, to August 4th, 1904.

KOWLOON DISTRICT IX. SCATTERED VILLAGES.

| 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

WEEKS.

100

96

92

88

84

80

76

72

68

64

GO

Percentage of

56

Infected

52

Raison Total

--aughte

40

36

32

28

78

WEEKS.

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

20

16

12

Number of

Plague Cuses.

6

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