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SAMPLING,
7. The amount of sampling done during the year is shown in the following table :-
Anise Oil
1,505 cases. | Soy
Bismuth Ore.
24 bags.
Spelter
Camphor
125 cases.
Ten Oil
Cassin Oil
1,605
Tiu...
Lard
4,525
Wine Chinese
2,000 tons.
Wood Oil
Nitric acid
!49 cases.
Wolfram
Manganese
REVENUE.
500 casos. 3,382 slabs. 2,960 cases. 87,620 slabs.
557 bottles.
9,519 cases,
389 bags.
8. The fees paid into the Treasury during the year amonuted
to $21,548.00 as against $22,143.50 in 1921.
The value of the years work as determined from the Tariff of Fees (Government Notification No. 439 of 1918) is $28,198.00 as against $31,083.50 in 1921.
LIBRARY.
9. Several standard works of reference have been added.
SPECIAL REPORTS.
10. Special Reports have been issued or supplied on the following subjects:-Mineral water manufacture, Chinese Wood Oil, Storage of Compressed Chlorine, Terne Plate containers, Sediment in Fuel Oil, Dangerous Trades Areas, Preservation of Timber, and Calcium calcium risks.
RESEARCH,
11. Tin in Wolfram.-The method worked out last year and mentioned in the last Report has been further tested on the samples sent for analysis and in every case very good agrement has been obtained, confirming the reliability of the method.
New Territory Waters.-The work on the village wells and spring waters of the New Territory mentioned in the last Report was completed some seventy samples in all being exhaustively examined. It is hoped that the results will be ready for publication shortly.
Camphor. Further work on ('hinese camphor has been carried out and the results obtained have been compared with those of a firm of London analysts who will shortly publish a paper incorporating some of the figures obtained here. These cover chiefly the Todine value of Camphor and the various Camphor Oils.
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Detection of Petroleum Traces.—In the investigation of cases of suspected arson the question frequently arises as to the presence or otherwise of traces of kerosene in the charred material taken from burnt houses. No very delicate chemical test for petroleum has been published. A piece of apparatus has been devised in this laboratory which depends on the use of oil-soluble dyes which will detect petroleum when present in the proportion of only 2 parts per million, and which is likely to be of considerable use in fire enquiries.
Kwong Tung Shales. A chemical investigation into the com- position of shales in the Sun Ning district has commenced and is still in progress,
STAFF.
12. No change has occurred in the staff during the year.
10th January, 1923.
E. R. DOVEY, Government Analyst,
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