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In addition to the above, the sampler took approximately 2,000 samples of water.
MISCELLANEOUS SERVICES.
In January the Laboratory staff carried out the fumigation of the Colonial Secretary's Office records with hydrocyanic acid gas. Three rooms filled with books and documents were treated for three days with a concentration of 30 grammes of gas per 1,000 cubic feet. The result was reported as being very satisfactory.
In December, the records at the District Office, Tai Po, were similarly treated, at the request of the District Officer.
REVENUE.
The fees paid into the Treasury during the year amounted to $24,974.00 as against $15,562.00 in 1928. The value of the work done as determined from the Tariff of Fees (Government Notification No. 439 of 1918) was $51,659.00 as against $46,001.00 in 1928.
STAFF.
I went on leave on February 15th and resumed duty on November 7th. Mr. V. C. Branson acted during my absence.
Mr. Branson went on leave on the 23rd November.
Mr. Kurrik was taken on the staff as a temporary assistant in January.
Mr. Arthur Jackson was appointed in October to take the place of Dr. Lubatti, and commenced his duties on the 21st November.