P.—l.

Table No. 22. Insulation Tests of the First and Second Cook Strait Cables for the Year ended 31st December, 1890, showing the Resistance per Knot after Two Minutes' Electrification in Megohms (British Association Units of Resistance).

Table No. 23. Insulation Tests of the Wanganui and Wakapuaka Cable for the Year ended 31st December, 1890, showing the Resistance per Knot after Ten Minutes' Electrification in Megohms (British Association Units of Resistance). Length of Cable laid, 1O8.69 Knots.

Table No. 24. Cost of Telegraph Lines, Telephone Exchanges, and Cables throughout the Colony.

Approximate Cost of Paper. —Cost of preparation (not given); printing (1,800 copies), £43 10s.

By Authority: George Didsbuey, Government Printer, Wellington.—lB9l. Price, Is.]

22

First Cook Strait Cable. No. 1 Wire. No. 2 Wire. No. 3 Wire. Second Cook Strait Cable. Dielectric Resistance per Knot. January February March .. kpril May June fuly .. August .. September October Nevember December 151 143 128 149 151 146 149 155 149 132 135 138 183 170 156 177 183 173 169 176 168 347 327 287 321 3i8 310 312 333 312 290 301 324 January February March April May (after repair) June .. July .. August September October November December 4'i 2-05 1-86 0-292-954 975 744 918 1,087 805 826 868 150 157 161

Date. Dielectric Resistance per Knot. Copper Resistance per Knot in Ohms. Mean Temperature of Sea-bottom calculated trom the Observed C.R. anuary .. February tf arch Vpril tfay une uly Vugust September October .. November December Twenty Cells. 5,054 4,648 3,993 4,590 5,315 5,974 6,628 8,056 6,665 5,859 5,717 5,35o 10-96 11-017 11-03 11-048 II-022 IC96 10-935 10-977 10-98 1098 10-979 11 Deg. Fahr. 57'2 60 60-5 61 60 57-2 56 58 58 58 58 59

Section of Line. Number of Miles of Line. Total Cost of Section. Cost per Mile. £ s. d. £ s. d. North Island. Total, North Island, to 31st December, 1889 Expenditure on sundry lines constructed during year 1890 .. 2,320j 1394 240,498 3 1 7,677 14 7 55 o 9 Totals .. 2,459! 248,175 17 8 South Island. Total, South Island, to 31st December, 1889 Expenditure on sundry lines constructed during year 1890 .. 2,5544 47 240,955 1 11 3,568 13 3 75 18 7 Total, South Island, to 31st December, 1890 2,601J 244,523 15 2 Total, North Island, to 31st December, 1890 2,4591 248,175 17 8 Totals .. 5,o6iJ 492,699 12 10 .ook Strait cables 81,280 2 4 "elephone exchanges .. 69,172 17 I ■*, Total i.643,152 12 3