C—lA

2

Table A.

Table B.

Minor Triangulation. An area of 59,200 acres is returned under this heading in the Nelson District at a cost of £330. Contoured Topographical Surveys. The principal area of 700 acres under this heading was surveyed in the Southland District, with small areas in Auckland, Hawke's Bay, and Taranaki. During the coming year it is hoped to experiment in this work by means of aerial-photography. Settlement Surveys. The Crown lands and lands-for-settlement areas surveyed during the year are set out in Table 2 under their appropriate headings for each land district. Native Land Surveys. This work, of which nearly 90 per cent, was carried out by private surveyors, shows a decrease of 56,000 acres in the area. Geodetic Triangulation. Good progress has been made in this work during the year, the area completed in the field to date being 17,500 square miles, while 13,500 square miles are partly completed. The main work for the year was the observation at ten main stations and seven auxiliary stations, the latter being a subsidiary network connecting the Dominion Observatory with the main network. Latitude was observed at nine stations and azimuth at two stations. The whole of the observations, both terrestrial and astronomical, are now being taken with the Wild primary triangulation theodolite, with a gain in speed and accuracy. The mean closing error per triangle is 1"-15 (48 triangles). Towards the end of the period under report the system of night observations was instituted, electric-light signals from dry cells being used in place of the opaque signals used for the davlight observations. Further details will be published in the Records of the Survey.*

Class of Work. Area, &c. Average Cost. Total Cost. Minor triangulation, by staff Contoured topographical, by staff Rural, by staff Suburban, by staff Town, by staff Town, by private surveyors Native Land Court, by staff Native Land Court, by private surveyors Roads, by staff Other work by staff 59,200 acres 937-6 sq. m. 85,656 acres 378-9 „ 1,070 sections 8 „ 9,099 acres 63,691 „ 153-38 miles l-34d. per acre £2-26 per sq. m. 2-30s. per acre 24-80s. per acre £1-90 per section £1-84 2T3s. per acre 2-10s. per acre £25-6 per mile £ s. d. 330 18 4 2,120 13 9 9,865 4 11 469 17 8 2,037 7 5 14 14 0 969 10 2 6.684 1 8 3,927 17 11 6,212 6 10 Total cost of completed work 32,632 12 8

Land DistrictRural Survey. Native Land Court. I North Auckland Auckland G-isborne Hawke's Bay Taranaki Wellington . . Marlborough.. Nelson Westland Canterbury . . Otago Southland Acres. 15,979 17,404 1,720 2,357 6,042 7,71.8 .. 155 2,808 2,432 4,849 18,777 5,415 Acres. 5,956 28,082 8,176 3,047 2,560 23,576 735 339 187 26 106 Totals 85,656 72,790