AnnualReport-1919

IX.—Miscellaneous,— Continued.

M84

1919 1918 Ammonium sulphate 1 0 Silk 0 2 Sodium tungstate 0 1 Rhubarb roots 1 0 Phosphorus oxide 1 Indigo 1 0 Inks 2 0 Stomach contents 1 0 Paper 6 0 Aluminium sulphate 0 Alcohol 0 5 Gauze 1 Glycerine 1 Cigarettes 2 Sodium sulphide 0 1 Resin 0 4 Sodium silicate 0 1 Beeswax 1 2 Rat poison 1 0 Other substances 0 Fish skin } 0 Dyes 5 7 Liquids 2 1 Linen 1 1 Total 1,792 1,886

TOXICOLOGICAL.

2. Among the chemico-legal investigations made during the year were 29 cases of suspected human poisoning. The results are tabulated below

Results of Analysis.

No. of Cases No poison found 15 Opium found 2 Morphine found 1 Arsenic found 3 Gelsemium elegans found 5 Lead found 2 Alcohol found 1 Total 29

PUBLIC WATER SUPPLIES.

3. Monthly examinations of the Pokfulum, Tytam, and Kowloon water supplies showed that these supplies were maintaining their high quality.

DANGEROUS GOODS ORDINANCE.

4. Of petroleum oil and liquid fuel, 167 samples were examined during the year. The tanks of 35 steamers were tested with the Clowes-Redwood apparatus. This apparatus has been re-modelled during the year and now permits the work to be done with greater ease and expedition.