C—la

The above expenditure apportioned among the various Chief Surveyors and Head Office is as follows:

Specialized Activities The following sets out brief reports on survey work of specialized nature carried out during the year:—Geodetic Triangulation Observations for La Place longitudes at six stations in the North Island and two stations in the South Island were completed during the year. It is anticipated that the observations at the remaining three stations in the South Island will be completed during 1949. This work will finalize all observations for the geodetic triangulation of the Dominion which was commenced in 1911. Second and Third Order Triangulation During the year a start has been made in establishing second and third order triangulation in the Rotorua - Taupo - King-country area for the purpose of controlling the topographical mapping of this area, which is required for national development purposes. Precise Levelling (a) Rimutaka Tunnel.—This traverse is required for the purpose of fixing the portals of the proposed Rimutaka Tunnel, and sixteen miles of the twentytwo miles were completed at the end of the year. It is anticipated that the traverse will be completed by June, 1949. This traverse is a portion of the Wellington-Wairarapa geodetic level net, and if staff can be made available this work will be continued during this year. (b) Waikato River.—A traverse along the "VVaikato River from Arapuni to Tatipo was started during the year for the control of the hydro-electric works on this river and approximately sixty miles of levelling between Arapuni and Ohakura was completed at the end of the year. Standard Traverse With the exception of a few miles in the Grisborne district, no standardtraverse surveys were made during the year. There are many miles of both city and rural standard traverses required in all districts, but, although the work is becoming increasingly urgent, the shortage of staff will not permit this work to be put in hand during 1949.

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District. Expenditure. Percentage. Head Office £ 17,788 Ill North Auckland and South Auckland 45,783 28-6 Gisborne 5,762 3-6 Hawkes Bay 10,554 6-6 Taranaki 8,009 5-0 Wellington 19,750 12-4 Marlborough 5,292 3-3 Nelson 6,062 3-8 Westland 2,303 1-4 Canterbury . . 19,713 12-4 Otago 12,047 7-5 Southland 6,787 4-3 Totals 159,850 100-0