566
14
Stations of Observation.
There will be found two types of cut mark stones existing in the New Territory.
T
One is
B
,
and this has been used to mark all main stations of the Triangulation at
M
which observations have been made. The mark stone is a block of granite, the upper surface being smooth dressed, which has been embedded in a hole with earth rammed around to fix it.
No. 2 is similar to No. 1 but the letters have been omitted, this tpye has been used, owing to the former having been expended; but only in cases where a point has been fixed by means of a theodolite interpolation to afford an origin or initial point for the cadastral traverses. These are not stations for extending the Triangulation.
Sometimes it has been necessary to determine the bearing of a station in addition to fixing an initial point of a traverse, and in a sequence with the latter; then for such a point a mark stone of type No. 2 has been used; and one of No. 1 for marking the initial point; therefore whenever a mark stone of type, No. 1 is met with, it may be safely assumed that it marks a station of observation of the Triangulation of the New Territory.
When a solitary mark stone of type No. 2 is discovered, it denotes, also, the site of a station of the New Territory Triangulation.
But when two mark stones-one of class 1 and another of class 2-are found in close proximity to one another, then the former marks the station of observation, and the latter a station for the traverses whose bearing with reference to the station of observation, has been determined.
As a rule most of the minor points fixed by means of observations taken from stations to them, have been marked by cairns in the first instance. But in the absence of a cairn the highest part of a summit fixed by Triangulation can safely be taken as having been the point observed to; and here, if it is necessary, a cairn may be erected. Conspicuous peaks, or rocks on hill tops, easily seen and recognised from a distance need no special marks being placed or cut on them; and none have been left in such cases.
GEO. P. TATE,
in charge.
21. 7.01.
Appendix No. 3.
REPORT ON WORK EXECUTED BY THE PUBLIC WORKS DEPARTMENT IN THE
:.
NEW TERRITORY, DURING THE YEAR 1901.
Sai Kung Police Station.
This station was completed at a total cost of $13,650.60 of which $11,506.65 was expended during 1901.
Sheung Shui Police Station.
ne contract was let in the end of May and good progress had been made by the close of the year. A sum of $11,238.44 was expended and it is anticipated that the work will be finished by the end of March, 1902.
k
Tai O Police Station.
This station was commenced about the same time as the one at Sheung Shui, but very little progress was made owing to the financial difficulties of the contractor. Mr. CHAN YEW TING has now taken over the contract under agreement with the Government and more satisfactory progress is being made.
Piny Shan Police Station.
The drains of this station have been extended for some distance from it, to a concrete sump which is periodically cleansed out. This arrangement for disposing of sullage water is found to act satisfac- torily. Cost $138.70.