4.43. 1,068 new lots were set out compared with 733 last year and 433 the previous year. 12 miles of building lines for 340 lots were checked compared with 9 miles for 249 lots in the previous year.
4.44. Details of 154 lots were sent to the Registrar General for the issue of Crown leases. 521 surrender plans were made and 675 boundary stones were fixed for 140 lots. 25 lots had their boundaries re-established.
4.45. At the end of the year 415 surveys for leases, 75 surveys for surrenders, 60 requests to set out boundaries, 4 requests to re-establish boundaries and 22 surveys for forthcoming sales were in arrears.
Triangulation and Traversing
4.46. 51 new triangulation stations were established and 47 miles of precise traversing were run to establish 892 permanent survey marks.
Levelling
4.47. 32 miles of precise levelling was carried out to establish 65 bench marks, and levels were carried over the sea from Lantau Island to Cheung Chau and from the Mainland to Tsing Yi Island, the longest water crossing observed being 12,500 feet.
4.48. Computations from the recordings of the automatic tide gauge at North Point showed the mean sea level for the year to be 3.91 feet above principal datum compared with 4.01 of the previous year.
Revision
4.49. 3,269 acres or a little over 5 square miles were surveyed for the large scale 1/600 survey of Hong Kong and Kowloon, bringing the total number of sheets available in this series to 216 (134 for Hong Kong and 82 for Kowloon). Second revision survey continued in the Wan Chai and Tsim Sha Tsui areas and to the 1/1,200 Survey of Tai Po area.
Topographical
4.50. Contour surveys are made covering 2,260 acres or approximately 3 square miles for town planning and development schemes at an average cost of $80 per acre. These were mainly plotted to a scale of 1/1,200 and at a vertical interval of 10 feet.
Miscellaneous
4.51. Surveyors prepared 15 surveys for Police Court cases and attended Court 28 times to give technical evidence. 131 miles of new road line were set out for engineering sub-departments.
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