As reported by the Daily Press, Hong Kong Dispensary was lighted with gas on Dec. 3rd evening. Some other buildings includes Hong Kong Hotel etc.
Not only in Central district as above, part of Queen's Road East in a "Queen's Theatre", the building was lighted with gas, by Dec. 12 (Monday).
Some other coverage in the China Mail [2] tells about its usage, e.g. on Dec. 12 and 15 nights :
(Dec. 13)
THE "Queen's" Theatre was opened for the first time last night ...
The fittings and scenery do the company great credit, the chairs being
very comfortably arranged, and brilliantly lighted with gas.
(Dec. 16)
THERE was a performance given last evening in a new erection called the Queen's
Theatre. The principal piece selected was "Ingomar," a five-act tragedy by, we believe, Miss Lovell... [3]
So the island residents were living happily ever after, with gas lamps from 1864 ?
(as lit with gas by some 500 lamps, in Queen's Road extending uphill to Upper Albert Road ...)
(to be continued)
sources
1. Hongkong Daily Press, 1864-12-5 & 1864-12-12
2. Overland China Mail, 1864-12-31
3. the Dec. one 16 should be kind of melodrama instead of tragedy though,
the play adapted by Maria Lovell from a German play; the theatrical company was San Francisco Troupe,