F.—l

26

Table No. 24. Insulation Tests of the First and Second Cook Strait Cables for the Year ended 31st December, 1885, 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, 1885, 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. 1 Wire. No. 2 Wire. No. 3 Wire. Second Cook Strait Cable. DielectricResistance per Knot. )anuary 156 178 317 January 1.375 February 161 183 312 February 1,289 March .. 176 190 334 March i>361 \pril April .. May 154 170 299 May .. 989 [une* June .. 769 fuly .. July .. 487 \ugust .. August 510 September September 498 October October 516 November November 346 December 160 168 326 December 279 * Cable broken from 12th June to 20th December.

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. January .. 5,128 1099 5S-5 February 4,801 11-02 60 March 4,639 1102 60 April 4,944 11-04 60 May 4,804 IO99 58-5 June 4,913 iro2 60 July 6,206 1099 58-5 August .. 6,153 10-95 56-5 September 4,689 11 02 60 October .. 5,729 11-02 60 November 5,920 10*99 58-5 I )ecember 5,282 1097 57-5