19

C—lα

Bench-mark C, 11-44 ft, above M.S.L., is the railway bench-mark at Port Chalmers Station. " Mean sea-level " was determined by using the gauge records from the 9th July, 1905, for the period of 369 days. Nelson. The tide-gauge from which the records were taken is of the fixed-board pattern, and is situated about 4 chains south of the lighthouse. Bench-mark A, 14-22 ft. above M.S.L., is a point on the top of the foundation of the lighthouse, at the south-east corner, and is marked by a copper bolt. Bench-mark B, 10-88 ft, above M.S.L., is the top of " standard stone " No. 82a at the corner of Wakefield Quay and Haven Road. Bench-mark C, 10-21 ft, above M.S.L., is the top of standard stone 81a, Haven Road. Bench-mark D, 12-07 ft. above M.S.L., is the top of standard stone No. 83a, Wakefield Quay. B, C, and D are each marked by a copper bolt. " Mean sea-level " was determined hj the mean of high- and low-water records throughout the years 1907 and 1908, which, taken independently, differ just 1 in. Westport. The automatic tide-gauge is situated at the north end of Crane Wharf. Bench-mark A, 11-21 ft. above M.S.L., is a dressed-granite block, within and at the south-west corner of Victoria Square, against Brougham and Russel Streets, marked by a copper bolt. Bench-mark B, 11-26 ft. above M.S.L., is in the same locality, of the same character, and marked in the same manner as A, and is distant therefrom, in a direction parallel to Brougham Street, 64-8 ft. Bench-mark C, 11-32 ft. above M.S.L., is of the same character and marking as A, and is distant therefrom 131-6 ft. in line with A B. " Mean sea-level " was determined by the mean of the high- and low-water records throughout the years 1907 and 1908, which, taken independently, differ 0-98 in. This is a tidal river subject to very heavy floods, and the gauge is about a mile and a quarter from its mouth.