35

F.-1.

Table No. 24. Insulation Tests of the First and Second Cook Strait Cables for the Year ended 31st December, 1883, showing the Resistance per Knot after Two Minutes' Electrification in Megohms (British Association Units of Resistance).

Table No. 25. Insulation Tests of the Wanganui and Wakapuaka Cable for the Year ended 31st December, 1883, showing the Resistance per Knot after Ten Minutes' Electrification in Megohms (British Association Units of Resistance). Length of Cable laid, 108.69 Knots.

First Cook Strait Cable. No. I Wire. No. 2 Wire. No. 3 Wire. Second Cook Strait Cable. Dielectric Resistance per Knot. fanuary 154 203 373 January 1,042 ?ebruary • rf 153 200 382 February 935 March .. 153 208 376 March 1,276 Vpril ... 145 198 378 April .. 1,263 VTay 1 go 243 448 May .. 1.137 June 163 211 364 June .. 1,114 fuly .. 182 228 409 July .. 1,227 Vugust ... 190 235 421 August 1,432 September 184 285 400 September 1.313 October 171 212 397 October 1.342 November 186 223 421 November i,432 December 160 193 366 December 1,203

Date. Dielectric Resistance per Knot. Copper Resistance per Knot in Ohms. Mean Temperature of Sea-bottom calculated from the Observed CR. Twenty Cells. Deg. Fahr. fanuary .. 4.433 10-99 58-5 February 3,8i4 11'02 60 March .. 3,352 11-04 61 Vpril 3,959 II'OI 59 Vlay 3,933 11-02 60 'une 4,185 11-02 60 uly 5,366 10-99 58-5 Vugust .. 6,189 II-02 60 September 6,35i 10-97 57'5 October ."."" 5,768 - 1099 58'5 rfovember »jv 5,8i4 10-95 56 ♦ December 4,972 10-95 56