62.
[ 14 ]
SURVEYS
Trigonometrical Surveys.
The systematic computation and recording of the plane rectangular co-ordinates of the 69 Main Triangulation Stations (as adjusted by the War Office Geographical Section 1928-29-30 and computed then to transverse Mercator co-ordinates) was completed during the year and an up-to-date Main triangulation Book compiled for reference. Reconstruction of the Minor Triangulation is proceeding, many of the records having been lost during the Japanese occupation of the Colony.
63. The following 27 Main Triangulation Stations were visited and inspected:- Nos. 0, 1, 2, 3, 4, 5, 14, 18, 19, 20, 21, 22, 24, 31, 32, 33, 34, 38, 39, 40, 100, 110, 111, 114, 117, JL & M. It was found that twelve required rebuilding or repairing. The beacons at Nos. 1 and 33 were rebuilt and that at No. 34 was repaired.
64. The following 8 Main Triangulation Stations were observed as existing but not visited:- Nos. 11, 12, 13, 16, 26, 97, 113, and 116.
65. The following 44 Minor Triangulation Stations were visited and inspected:- Mountain Lodge, Middle Island, Mai Po Village, Ada Rise, Gin Drinker's Bay, Magazine Gap, High D'Aguilar, Danger Flag Hill, Mission Hill, Sacred Hill, Monument 87, Quarry Bay, Quarry Hill, Causeway Bay, Pokfulam Reservoir, Kai Lung Wan Cemetery, High West, Whitty Street, Black Boulder, Nos. 35, 36, 53, 54, 64, 73, 74, 76, 87, 90, 92, 128, 129, 132, 133, 134, 135, 136, 137, 139, 141, R8, R25, BP19 and KP. It was found that fourteen required building, rebuilding or repairing. Beacons at Mai Po Village, Mission Hill and Sacred Hill were built, and at Nos. 35, 36 and 76 were rebuilt.
66. The following 26 Minor Triangulation Stations were valued by triangulation:- Mountain Lodge, Middle Island, Mai Po Village, Ada Rise, Magazine Gap, High D'Aguilar, Danger Flag Hill, Mission Hill, Sacred Hill, Monument 87, Whitty Street, Nos. 35, 36, 87, 90, 92, 128, 129, 132, 133, 134, 135, 136, 137, 139 and 141.
67. General Surveys.
The more important general survey work included the following:-
Hong Kong Island:
(a) 28 Rural Building Lots and Garden Lots (total area
Page 16
62.
[ 14 ]
SURVEYS
Trigonometrical Surveys.
The systematic computation and recording of the plane rectangular co-ordinates of the 69 Main Triangulation Sta- tions (as adjusted by the War Office Geographical Section 1928-29-30 and computed then to transverse Mercator co- ordinates) was completed during the year and an up-to-date Main triangulation Book compiled for reference. Reconstruc- tion of the Minor Triangulation is proceeding, many of the records having been lost during the Japanese occupation of the Colony.
63. The following 27 Main Triangulation Stations were visited and inspected:-Nos. 0, 1, 2, 3, 4, 5, 14, 18, 19, 20, 21, 22, 24, 31, 32, 33, 34, 38, 39, 40, 100, 110, 111, 114, 117, JL & M. It was found that twelve required rebuilding or repairing. The beacons at Nos. 1 and 33 were rebuilt and that at No. 34 was repaired.
64. The following 8 Main Triangulation Stations were observed as existing but not visited:-Nos. 11, 12, 13, 16, 26, 97, 113, and 116.
65.
The following 44 Minor Triangulation Stations were visited and inspected:-Mountain Lodge, Middle Island, Mai Po Village, Ada Rise, Gin Drinker's Bay, Magazine Gap, High D'Aguilar, Danger Flag Hill, Mission Hill, Sacred Hill, Monu- ment 87, Quarry Bay, Quarry Hill, Causeway Bay, Pokfulam Reservoir, Kai Lung Wan Cemetery, High West, Whitty Street, Black Boulder, Nos. 35, 36, 53, 54, 64, 73, 74, 76, 87, 90, 92, 128, 129, 132, 133, 134, 135, 136, 137, 139, 141, R8, R25, BP19 and KP. It was found that fourteen required building, rebuilding or repairing. Beacons at Mai Po Village, Mission Hill and Sacred Hill were built, and at Nos. 35, 36 and 76 were rebuilt.
66.
The following 26 Minor Triangulation Stations were valued by triangulation:-Mountain Lodge, Middle Island, Mai Po Village, Ada Rise, Magazine Gap, High D'Aguilar, Danger Flag Hill, Mission Hill, Sacred Hill, Monument 87, Whitty Street, Nos. 35, 36, 87, 90, 92, 128, 129, 132, 133, 134, 135, 136, 137, 139 and 141.
67.
General Surveys.
The more important general survey work included the following:-
Hong Kong Island:
(a) 28 Rural Building Lots and Garden Lots (total area
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