0.--1 A

3

Mr. IT. M. Kensington returned a. distance of 23 miles as completed during the year in the vicinity of Auckland. Mr. A. (!. Haase lias continued with the New Plymouth standard, and this is now nearing completion. Mr. .!. !). Clapperton returns 23 miles of rural standard survey on main highways completed during the year near Blenheim. Mr. H. A. Adams has completed 2ilt miles of the 26 miles required to be done in and around Timaru. Mr. C. Otway has been engaged practically continuously on the Invercargill survey, which is now nearly completed. The permanent surfacing of roads and streets has been the cause of considerable work in various districts, as the standard marks have to be made to accord with the new levels of the surface, and covers provided in order that they may be readily available for the surveyor. A report on each survey, when completed, is published in the Records of the Survey of New Zealand. TOPOGRAPHICAL SITRVEY. The plane-table survey on 4-inohes-to-l-mile scale is being continued at Rotorua, Ngaruawahia, and Taranaki, a total area of 2L'3J, square miles having been completed in the field, during the year. Details of these surveys are published in the " Records of the Survey of New Zealand." Field Inspections, About thirty field inspections have been made during the, year by senior stall officers, and, while usually disclosing good work on the part of tin; surveyor, there has been in some few instances very poor work disclosed. In some of the districts, owing to shortage of staff, the number of inspections made are insufficient. It is expected that more of this important duty will be undertaken during the coming year. Tidal Survey. The work for the year under report comprised the completion of the analysis for the Port of Lyttelton for 1925, together with a complete fresh analysis for the Ports of New Plymouth (1921) and Dunedin (1920). The constants derived therefrom, combined with previous determined values are contained in Table C.

Table C. Mean Values of the Harmonic Constants for Use in preparing Tide-tables.

'ide Symbol. Auckland. A„=5-72ft. BlulF. A 0 =5-27ft. Dunedin, , A 0 =3-23ft. Lytt A„ = elton. 320 ft. New PI lyinonth. Wellington. 5-50ft. A„=2-93ft. K. H. K. West port. A„= 4-77 ft. H. K. H. K. I H. K. [ H. K. II. H. K. Short Period SI 82 S4 Ft. O Ft. n. Ft. O Ft. Ft. Ft. 0-011 0-580 0-019 31-74 268-3.1. 331-83 0-010 0-502 0-009 100-05 49-79 223-42 0-014 02-55 0-252 126-17 0-006 315-34 0-025 0-159 0-009 24-75 140-20 189-50 0-011 1-1.03 0-008 90-77 0-002 354-03 306-14 0-100 330-28 352-33 0-004 215-90 0-0.11 78-04 0 959 332-22 0-007 32-75 SO Ml M2 0-003 0-009 3-818 41-77 144-71 206-37 0-006 0-011 2-858 170-17 127-33 35-68 0-003 10017 0-008 37-80 2-403 122-42 0-014 0-010 2-893 340-69 50-45 123-53 0-006 0-008 3-986 88-73 0-004 310-31 71-92 0-006 22-11 277-36 1-611 138-99 0-006 331-21 0-012 143-08 3-747 304-43 M3 M4 M6 0-039 0-106 0-026 199-21 124-54 314-33 0-011 0-088 0-086 272-74 226-45 79-53 0-014 282-83 0-265 180-28 0-059 0-23 0-013 0-011 0-019 154-24 103-50 65-15 0-030 0-078 0-023 151-30 0-019 175-72 52-77 0-041 251-11 262-35 0-012 98-61 0-021 208-15 0-057 53-90 0-026 36-82 Ol Kl K2 0-053 0-235 0-139 145-25 109-17 250-95 0-1 13 0-058 0-134 72-91 I 1.5-08 46-77 0-087 09-07 0-070 95-22 0-084 115-51 0-084 0-159 0-052 62-22 84-89 105-71 0-040 0-205 0-309 103-23 0-103 36-57 186-00 0-082 84-49 297-39 0-044 7-49 0-093 45-98 0-073 184-39 0-276 328-04 PI ,11 Ql 0-077 0-017 0-009 163-91 185-22 67-58 0-023 0-006 0-031 105-44 198-96 47-70 0-022 93-75 0-008 85-48 0-030 62-34 0-048 0-008 0-019 100-50 134-16 58-96 0-063 0-018 0-019 179-23 0-032 77-13 222-36 0-010 178-05 38-27 0-036 22-17 0-022 133-91 0-013 219-25 0-037 33-03 L2 N2 T 2 0-108 0-793 0-203 219-79 179-27 206-34 0-109 0-654 0-153 32-44 1.6-50 53-35 0-160 122-02 0-519 102-02 0-114 103-08 0-076 0-644 0-11.9 155-20 92-57 1.10-05 0-122 0-821 0-177 278-28 0-029 156-82 261-11 0-398 104-65 264-28 0-107 113-02 0-097 285-41 0-770 289-02 0-194 j 320-40 p.2 T2 MS4 0-102 0-057 0-173 178-49 294-82 195-31 0-065 0-020 0-081 7-93 89-1 I 2-78 0-032! 51-75 0-018! 239-27 0-104 142-23 0-102 0-027 0-104 64-85 229-70 117-86 0-127 0-078 0-095 242-24 0-067 88-08 31601 0-031 280-97 258-14 0-035 133-28 0-1.34'283-83 0-053 9-08 0-105 294-78 (2SM) 2 R2 0-066 0-015 303-10 211-10 0-045 0-014 121-63 I 11 -90 0-040 19-29 0-032 181-93 0-063 0-018 27-15 143-70 0-088 0-032 222-36 0-033 356-74 300-05 0-011 138-68 0-076 199-89 0-035 178-80 Long Period Mm Mf MSf 0-045 0-050 0-035 195-02 206-01 209-57 0-043 0-007 0-003 1-94 235-30 326-77 0-052 354-94 0-095 204-77 0-056 43-62 0-060 0-074 0-100 172-57 207-51 132-64 0-060 0-020 0-081 337-01 0-039 1.74-85 365-26 0-060 232-19 190-54 0-043 1.06-30 0-051 199-18 0-055 7-87 0-069 98-39 Sa Ssa 0-1.86 0-071 30-61 164-94 0-089 0-115 16-98 82-05 0-112 2-10-70 0-096 202-78 0-123 0-103 348-92 161-90 0-077 0-084 86-54 0-108 332-12 43-84 0-073 I 1 I -04 0-113 j 81-51 0-116 I 111-03