31
photographs was started.
It was found that
there were certain discrepancies and deficiencies
in the lists of trigonometrical points which had
of compilation
to be cleared up before the work could be started.
Some of these had been already noted but it was
considered advisable to ask again for further
information on all points.
Only a list of
coordinates in geographicals and rectangulars was
available. There was no information as to the
method of computation, projection and figure of
the Earth employed.
In addition, the following
points gave rise to special comment:-
(1)
(ii)
Doubt as to the geographical values
adopted for the origin.
Discrepancies between values given for
rectangular and geographical coordinates.
These appeared to be partly systematic
and partly due to errors in copying.
(iii) False value for the zero at Victoria
Peak.
Information regarding these points was
asked for in a letter sent tothe Colonial Survey
Committee on the 28th June,1927, and forwarded
by them to the Government of Hong Kong. No reply
has yet been received.
Information was also
asked for by cable to G.O.C.Hong Kong regarding
the geographical coordinates adopted for Kowloon
Observatory and the methods of computation,
projection, and figure of the Earth employed.
The reply gave the values for Kowloon but stated
that no information on the other points was
available.
From this it appears that the
trigonometrical framework for controlling the new
maps