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Waters.
Chemicals.
1925. 1924.
Wells and Springs,
Sea Water,
Sewage,
Distilled water,
8
373
1
Ammonium sulphate, Bleaching powder,
1925. 1924.
1
1
11
3
Public Supplies,
595
Water from streams,
4
Water from steamers,
13
0
Water from Swatow,
1
Building Materials.
O Carbon bisulphide,
9 | Bismuth subnitrate, 286 Glycerin,
0 Hydrochloric acid,
Liquid paraffin,
Magnesium carbonate,
Potassium bichromate, Sodium bicarbonate,
Sodium hydroxide,
TOXICOLOGICAL INVESTIGATIONS.
Among the investigations carried out during the year, were those into 59 cases of suspected human poisoning. The following table shows the results:-
Cement,
Plaster,
HOHONO-0
Soil,
Red Lead Paint,
Oil.
Coal Tar Disinfectants,
Anise Oil,
26
32 | Urine,
Cassia Oil,
38
77
Fæces,
Castor Oil,
Essential oils, (other),
Lard Oil,
Linseed Oil,
0 Gall stone,
25 Soy,
0 Deposits,
6041
Results of Examination.
1
No poison found,
1
Opium found,
2
Sodium phosphate,
1
Potassium binoxalate found,
0
Sodium sulphide,
1
Animal toxins (ptomains) found,
l'ieric acid found,
1
1 Sulphuric acid,
64
58
Alcohol found,
Japanese Star Anise found,
Miscellaneous,
(Illicium religiosum),
Lysol found,
Nitric acid found,
Number of Cases.
25
26
2
1
1
I
11
2
Total,
1
1
1
59
Dog's stomach,
0
Lubricating Oil,
Soja Bean Oil,
Ten Seed Oil,
Wood Oil,
Pharmacy Ordinance.
Acriflavin,
Balsum of Copaiba,
Chinese Drugs,
Chloroform,
Datura alba,
2
Sand,
Embrocation,
Gelatin,
Tanning liquid,
Metal polish,
Hoshi Digestive Tablets,
0 Soap,
1
Peanuts,
0
0 Battery plates,
0
0
4 Transformer oil,
44
136
Paper,
3
Flyosan,
Wax,
Metal Sheets,
2
Husks,
0
Brass tube,
0
3 Conl tar,
1 Asphalt,
3
0
FOOD AND DRUGS.
The past year has been marked by a very large increase in the amount of food and drug work performed in the Laboratory, as is shown by the following figures:
Table showing number of samples of food and drugs examin- ed in preceeding years,
Year.
Number of Samples.
1922.
1923.
1924.
1925.
339
F88858
77
62
66
Lotion,
Mixture,
0
1 Dust,
Thermometers for calibration,
Opium solution,
Hydrometers
11
+
Patent medicines,
0
Zinc ball,
Pills,
2 Boiler scale,
1
Quinine solution,
3
0
Coin,
1
Tablets,
1
0
Black liquid,
1
Tincture of Opium,
0
Ginseng root,
1
Unknown drugs,
91
0 Liquid face powder,
1
0
Filtering materials,
3
Mineralogical.
Clay,
1
Metals,
220
151
Meat,
1
Ores,
90
75
Bird Lime,
2
0
Coal,
11
68
Minerals,
12
2
Total,
..1,952 1,339
Tin Slag,
This increase has caused the pressure of work to be at times difficult to cope with.
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