F.—l.

Table No. 23. Insulation Tests of the First and Second Cook Strait Cables for the Year ended 31st December, 1892, showing the Resistance per Knot after Two Minutes' Electrification in Megohms (British Association Units of Resistance).

Table No. 24. Insulation Tests of the Wanganui and Wakapuaka Cable for the Year ended 31st December, 1892, showing the Resistance per Knot after Ten Minutes' Electrification in Megohms (British Association Units of Resistance). Length of Cable laid, 108.69 Knots.

Table No. 25. Maintenance.

23

First Cook Strait Cable. Dielectric Resistance per Knot. Second Cook Strait Cable. I Dielectric Resistance per Knot. No. 1 No. 2 No. 3 Wire. Wire. Wire. anuary February VIarch .. Vpril .. Vlay une uly August (after repair) August September October vlovember December 89 86 87 83 I Broke \ n. 127 127 124 126 170 173 180 181 160 187 260 266 241 253 332 291 302 313 282 299 January February March April May June .. July .. ■August (after repair) August September October November December 953 779 838 7°3 L Broken. 116 101 781 21'40 IOI IOO 87 99-9 1,142 802 227 1,498

Date. Dielectric Resistance per Knot. Copper Resistance per Knot in Ohms. Mean Temperature of Sea-bottom, calculated from the Observed C.R. Twenty Cells. 5-279 4,621 5,782 4,250 6,040 3,3i6 6,929 6,670 5,685 6,179 6,024 5,593 Deg. Fahr. 60 anuary .. February March \.pril Way une uly August September Dctober .. November December II'O2 10-997 11-408 II'I28 11'042 II 10-996 10-912 10-93 10-873 10979 10-97 59 76 64-5 60-5 59 59 55 56 53-6 58 577

Section. No. of Miles. Travelling Expenses of Linemen and Inspectors. Extra Labour. Cost of Salaries of Material used Linemen for and Repairs. Inspectors. Total Cost of Maintenance. Average Cost per Mile. Riverton to Balclufcha Tokomairiro to Queenstown Balclutha to Waitaki Waitaki to Cbristchurch Christehurch to Kumara Kumara to Lyell Lyell to Nelson Nelson to Blenheim, including Tophouse Line Blenheim to Kaikoura Kaikoura to Christehurch Wellington to New Plymouth .. Wellington to Te Nui Te Nui to Napier Napier to Tauranga Tauranga to Thames Auckland South Auckland North 461 323 553 400 204 165 265 140 £ s. d. 152 8 10 201 14 5 373 10 0 189 13 9 305 19 5 203 14 8 153 15 5 101 5 6 £ s. d. 533 16 2 165 1 6 1,090 12 11 367 5 6 560 19 2 208 18 1 155 2 0 121 6 10 £ s. d. 1,013 11 11 284 6 10 1,962 9 1 2,013 19 7 572 14 10 120 7 6 175 0 10 273 5 5 £ s. d. 278 0 0 240 0 0 550 0 0 558 0 0 502 0 0 425 0 0 205 0 0 320 0 0 £ s. d. 1,977 16 11 891 2 9 3,970 12 0 3,128 18 10 1,941 13 5 958 0 3 688 18 3 815 17 9 £ s. d. 4 5 10 2 15 2 7 3 10 7 16 5 9 10 4 5 16 1 2 12 0 5 16 7 100 216 576 172 186 547 76 527 568 155 5 0 61 0 11 423 12 4 198 4 8 184 1 3 462 13 5 56 17 0 514 0 3 303 13 8 283 9 9 304 9 1 516 15 3 130 2 1 475 8 3 689 9 1 163 15 0 722 9 1 650 19 3 275 16 10 285 19 11 1,284 15 1 238 19 2 438 2 9 492 6 6 96 10 6 665 3 5 565 11 3 288 0 0 400 0 0 1,166 0 0 735 0 0 220 0 0 690 0 0 153 0 0 380 0 0 530 0 0 1,002 11 7 1,051 9 11 3,391 2 8 1,302 5 11 1,317 12 3 2,334 9 0 470 2 6 2,281 12 9 2,050 4 2 10 0 6 4 17 4 5 17 9 7 11 5 7 18 4 5 4 6 3 9 4 6 7 3 12 2 Totals 5,479 4,041 10 6 17,139 19 0 10,759 1 5 7,640 0 0 29,580 10 11 *5 8 0 * Averai ier mile of total cost.