474

Table III.-Water Examination.

Number of Organisms per cubic centimeter.

Source of Water.

Tytam Service,.

Pokfulam

Kowloon

19

A Garden Well, East Point. A Well at 5 Lower Rutter Street,. A Well at 6 Lower Rutter Street,. A Well at 7 Lower Rutter Street, A Well at 8 Lower Rutter Street,..... A Well at 12 Lower Rutter Street, A Tank,

Do.

A Well in Fuk Hing Lane,

A Spring near the Slaughter House,..

About 19 (mean of 12 examinations).

*

21 (

12

+

}}

}.

14

"1

}}

39

55 ( 2,000.

Between 40,000 and 50,000. About 10,000.

19

50,000.

500,000.

Between 150,000 and 200,000.

""

400 and 500.

"

500 and 1,000.

About 5,000.

800.

24

Note. It is laid down by experts that a really good water should contain less than 100 organisms per cubic centimeter. That anything less than 500 is fairly good, 1,000 suspicious and more than 1,000 very suspicious.

Table IV.-Material examined for infectious diseases of man.

Examinations for Typhoid Fever,

58

Examinations for Diphtheria,

37

Examinations for Cholera,

1

Examinations for Tuberculosis,

16

Table V.-Examinations for infectious diseases of animals.

For Anthrax and other diseases of Cattle,

For Rabies of Dogs,

For Glanders of the Horse,

For Chicken Cholera,

Milk,

38

1

9

1

Table VI.-Examinations for Rat Plague.

(a.) Total number of Victoria Rats examined,

Total number of Kowloon Rats examined,

25,265

13,255

38,520

(b.) Total number of Victoria Rats found infected,

Total number of Kowloon Rats found infected,

(c.) Species of Rats found infected :-

16

12

28

Mus Rattus,

Mus Decumanus,

Mus Musculus,

Undetermined,

20

4

1

3

Note.-Mus Decumanus has been obtained for examination more frequently than Mus Rattus the proportion being about 3 to 2. ́

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