F.—l.

Table No. 22. Insulation Tests of the First and Second Cook Strait Cables for the Year ended 31st December, 1891, 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, 1891, 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. 24. Maintenance.

4—F. 1.

23

First Cook Strait Cable. I Dielectric Resistance per Knot. No. I No. 2 No. 3 Wire. Wire. Wire. Second Cook Strait Cable. Dielectric Resistance per Knot. January February March April May (after repair) June July .. August September October November December 123 130 I Broke 103 120 123 "3 112 98 104 98 n. 148 152 133 155 162 165 114 141 o-i35 0-051 273 325 324 328 3i4 280 January February March April May (after repair) June .. July .. August September ' October November December 825 808 662 75o 806 967 927 i,338 867 845 904 830 H7 139 322 286

' Date. Dielectric Resistance per Knot. Copper Resistance per Knot in Ohms. Mean Temperature of Sea-bottom, calculated from the Observed CR. January .. February March April May June July August September October .. November December Twenty Cells. 4,732 4,639 5,035 5,416 5,658 6,712 8,054 6,896 7,010 5,314 5,467 4,956 11-066 10-989 II II-02 11 10-995 10-932 10902 I0'9 10-727 10-932 II-2 Deg. Fahr. 62 58-98 59 60 59 59 56 55 54'5 47 56 67-5

Section. No. of Miles. Travelling Expenses of Linemen and Inspectors. Extra Labour. Cost of Material used for Repairs. Salaries of Linemen and Inspectors. Total Cost of Maintenance. Average Cost per Mile. Riverton to Balclutha Tokomairo to Queenstown Balclutha to Waitaki Waitaki to Christchurch Christchurch to Greymouth .. Greymouth to Lyell Lyell to Nelson Nelson to Blenheim, including Tophouse Line Blenheim to Christchurch Wellington to New Plymouth .. Wellington to Napier Napier to Tauranga, including Napier to Gishorne Line Tauranga to Thames Auckland to Waikato and Coromandel Auckland to Kawakawa Kawakawa to Mongonui 417 323 547 385 204 165 242 140 £ s. d. 164 12 6 162 4 11 295 7 9 157 1 11 255 11 6 105 9 1 176 16 10 64 7 0 £ s. d. 173 3 4 169 0 5 264 9 0 290 1 7 174 18 6 85 6 3 124 4 9 110 9 0 £ s. d. 1,645 6 7 165 18 1 895 10 11 420 17 4 253 2 0 53 8 0 102 8 3 187 18 4 £ s. d. 306 13 4 306 13 4 586 13 4 673 6 8 630 16 8 292 10 0 267 10 0 345 0 0 £ s. d. 2,289 15 9 803 16 9 2,042 1 0 1,541 7 6 1,314 8 8 536 13 4 670 19 10 707 14 10 £ s. d. 5 9 10 2 9 9 3 14 7 4 0 0 6 8 10 8 5 0 2 15 5 5 1 1 316 558 355 520 215 11 0 450 10 6 456 4 7 399 17 5 233 19 9 593 4 6 718 5 4 473 14 7 220 8 11 1,630 14 8 1,414 17 8 270 4 9 670 16 8 1,145 0 0 921 5 0 672 10 0 1,340 16 4 3,819 15 8 3,510 12 7 1,810 6 9 4 4 10 6 16 10 9 17 9 3 9 0 76 527 89 14 5 412 18 4 222 5 10 700 5 2 80 1 5 1,305 5 1 188 15 0 512 10 0 5S0 16 8 2,930 18 7 7 12 10 5 11 3 453 115 251 8 1 169 5 4 773 13 6 249 5 0 554 10 4 47 5 10 410 0 0 50 0 0 1,989 11 11 515 10 2 4 7 10 4 9 8 Totals 5,349 3,827 7 8 5,356 6 6 !9,247 18 2 7,980 0 0 36,411 12 4 *4 18 9 * Average total cost per mile.