This is an excellent resource if you're interested in Hong Kong (and Europeans in China) in the early 1900s.
The book was published in 1908, but I guess the material would have been gathered over the previous year or two.
It can be viewed online, and downloaded in various formats, at:
Dates of events covered by this document
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Sample pages
POLICE, PRISONS, AND FIRE BRIGADE.
By Captain F. W. Lyons, Acting Captain-Superintendent of Police, Hongkong.
The earliest allusion to the Hongkong police is to be found in Mr. Tarrant's "Early History of Hongkong." and relates to an incident which occurred in December, 1842, when a Mr. Fearon having hoisted a flag on a marine lot to which claim was also laid by the Admiral on behalf of the Government. "The Land Officer went to the place with some policemen and…