F.—l

38

Table No. 24. Insulation Tests of the First and Second Cook Strait Cables for the Year ended 31st December, 1884, 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, 1884, showing the Resistance per Knot after Ten Minutes' Electrification in Megohms (British Association Units of Resistance). Length of Cable laid, 108-69 Knots.

No. I Wire. No. 2 Wire. No. 3 W c. .Second Conk Strait Cable. Dielectric Resistance per Knot. First Cook Strait Cable. January 170 202 383 January 1.342 February 163 I90 357 February 1,226 March .. 161 189 366 March 1,403 April* .. April .. May 163 I89 in May .. 1,488 June 166 183 343 June .. 1,086 July .. 192 I96 35s July .. i,375 August .. 170 187 3C7 August 1.473 September 175 I96 368 September 1,290 October 172 197 346 October 1,289 November 175 201 368 November i,375 December l6l 183 330 December 1,289 * No test taki

Date. Dielectric Resistance per Knot. Copper Resistance per Knot in Ohms. Mean Temperature of Sea-bottom calculated from the Observed C.R. Twenty Cells. Deg. Fahr. 'anuary .. 4.582 10-99 585 February 4.569 11 09 59 «arch .. 4,658 11 04 61 Vpril 4.558 ii'O4 61 Way 4.569 11 02 60 une 4.956 1104 60 uly 5.009 1101 59 Vugust 6,486 11'04 60 September 6,738 1095 56 October .. 6,365 1101 59 November 6,111 1092 55 December 5,335 11'04 60