13

T?.—G

* This test was taken with ziuc to earth ; all the others with copper to earth. f No tests taken. J Cable broken.

* First test taken immediately after laying. f No test taken.

TABLE F. Insulation Tests of the Cook Strait Cable for the Tears ended 30th June, 1868, 1869, 1870, 1871, 1872, 1873, 1874, 1875, 1876, 1877, 1878, 1879 respectively, and to 31st March, 1880, showing the Resistance per Knot after Two Minutes' Electrification in Megohms (British Association Units of Resistance).

TABLE G. Insulation Tests of Second Cook Strait Cable for the Years ended 30th June, 1877, 1878, and 1879; also, for the Nine Months ended 31st March, 1880, showing the Resistance per Knot after two Minutes' Electrification in Megohms (British Association Units of Resistance). Length of Cable Laid, 44.315 knots.

Date. No. 1 Wire. No. 2 Wire. No. 3 Wire. Date. No. 1 Wire. No. 2 Wire. No. 3 Wire. Date. No. 1 Wire. No. 2 Wire. No. 3 Wire. Date. No. 1 Wire. No. 2 Wire. No. 3 Wire. Date. No. 1 Wire. No. 2 Wire. No. 3 Wire. Date. No. 1 Wire. No. 3 Wire. No. 3 Wire. i ! I ! I I I 1867— Sept. 1 Sept. 30 Oct. 14 Nov. 1 Nov. 14 Dec. 2 .1868— June 7* Sept. 1 1 Sept. 17 1869 — March 27 April 19 May 11 May 17 June 22 July 27 Aug. 24 Sept. 27 Oct.f ... Nov. 8 Dec. 3 1870 — Jan. 22 Feb. 22 March 18 March 20 473 634 547 598 574 608 93o 630 697 467 483 562 531 522 649 667 754 71 102 179 32*6 io*6 io*5 5'5 22-5 63-5 26 30 31 14 15 9 7 13 554 6.34 620 667 643 709 1,094 946 1,000 729 748 95o 9 63 93i 1,104 1,200 1,275 1870— April 26 May 31 June 26 July 16 Aug. 16 Sept. 17 Oct. 20 Nov. 21 Dee. 21 1871— Jan. 2 1 Peb. 21 March 23 April 24 May 23 June 24 Julyf ... Aug. 25 Sept. 25 Oct.f ... Nov. 2 -; Dec. 28 1872— Jan. 27 Peb. 27 March 3 1 April 25 430 456 355 517 473 508 47i 50S 480 S74 565 497 508 489 7i7 8'6 ■446 2'3 '393 i'7 8' 7 S'5 IO'2 7-7 67 2*0 2'39 i'8-i 2*08 1*28 812 871 622 893 1,108 1,069 1,149 1,121 1,312 1,173 I,l66 1872— May 28 Juno 22 July 23 Aug. 19 Sept.f ... Oct. 22 Nov. 20 Dec. 30 1873Jan. 24 Peb. 24 March 25 April 23 May 23 June 23 July 24 Aug. 23 Sept. 23 Oct. 21 Nov. 22 Dec. 24 649 687 826 818 709 867 642 578 611 585 505 611 628 717 609 S69 695 554 44'4 49'6 656 88' 5 173 208 220 10*3 18*1 24-8 21'0 297 50'0 6i*-j 68*3 57'2 182*1 1,173 1,146 1,476 i,73S 1,331 .,156 1,561 1,307 1,271 1,420 1,272 1,231 1,203 1,564 1,193 1,214 1,429 1,312 1874— May 23 June 27 July 24 Aug. 29 Sept. 24 Oct. 26 Nov. 24 Dec. 23 Jan. 23 Feb. 23 March 24 April 23 May 22 June 24 July 24 Aug. 24 Sept. 24 Oct. 23 Nov. 24 Dec.J ... 1876— Jan. -jo Feb. '24 March 24 April 24 May 1 1 551 607 682 771 643 944 849 650 883 764 719 636 712 562 749 679 812 692 622 398-0 961 75 530 69 28 18 84 94 44 30-4 37'6 417 4i'9 120' 165* 161* ,87* 205* I,IIS 1,227 I,36S 1,564 1,48.3 1,928 1,882 1,060 1,695 1,274 1,277 1,139 1,274 1,064 1,251 1,781 1,264 i,39i 1876— May 24 June 26 July 24 Aug. 24 Sept. 25 Oct. 24 Nov. 24 Dec. 23 i877Jan. 24 Peb. 24 March 24 April 24 May 24 June 23 July 24 Aug. 24 Sept. 24 Oct. 24 Nov. 24 Dec. 24 407 333 39« 354 380 575 620 37° 313 347 S84 379 363 396 453 435 460 464 436 408 •736 ■199 •178 *l66 •274 3-095 •151 •357 •130 '365 •826 '313 '222 *2II •258 •280 •338 •294 ■374 •182 S24 416 493 490 475 843 786 460 360 418 717 545 386 432 5°i 474 464 452 423 4°3 1878— May 24 June 24 July ' 24 Aug. 24 Sept. 24 Oct. 24 Nov. 23 Dec. 24 1879Jan. 24 Feb. 24 March 24 April 24 May 24 June 24 July 25 Aug. 23 Sent. 24 Oct.-t ... . Nov. 24 Dec. 24 402 410 400 435 : 434 435 434 4i7 432 436 407 407 290 293 268 -231 •470 •303 •265 •329 '342 ■374 •233 '554 •229 ■313 •601 ■312 •421 1-392 •444 •839 42.3 414 530 416 442 448 45« 460 5°3 454 479 ■076 •305 •039 Bad. Bad. Bad. 1,003 955 1,288 7Si 517 1*36 1-31 1,444 1,123 233 168 582 638 ... S 2-5 i,2S3 i,i59 64'.' 5/0 2*65 9-98 1,481 1,079 347'5 389-5 ... ! 192 164 1 34i 309 393 343 526 4'7 442 344 2 3 3'4 306 865 707 967 619 579 596 676 553 8-29 9'S 18*5 39' 1 981 1,073 938 979 1874Jan. 24 Feb. 24 March 25 April 24 592 551 559 579 314-3 280*7 37i'5 3564 1,438 1,217 1,106 291 407 445 355 308 •649 2'886 •623 '154 •385 S84 680 715 436 379 1878— Jan. 24 Feb. 23 March 23 April 24 578 36s 411 377 "774 •442 ■502 '273 634 368 419 387 1880— Jan. 24 Feb. 24 March 24 ■7° 170 18S 275 264 290 325 3-8 369

Date. Dielectric Resistance per Knot. Copper Resistance per Knot in Ohms. Inductive Capacity per Knot in Microfarads. Date. Dielectric Resistance per Knot. Copper Inductive Resistance Capacity per Knot in per Knot in Five Cells. Fifty Cells. Ohms. Microfarads. Date. .Dielectric Resistance per Knot. Copper Resistance, per Knot in Ohms. Inductive Capacity per Knot in Microfarads. Five Cells. Fifty Cells. Five Cells. Fifty Cells. March 12, 1877* March 24 ,, April 24 „ May 24 ,, June 23 „ July 24 ,, August 24 ,, September 24 „ October 24 „ November 24 ,, December 24 ,, January 24, 1878 February 23 ,, 3,34' 4,000 2,689 3,1.34 2,613 3,964 3,OI4 2,545 2,085 3,227 2,096 2,870 2,141 2,857 2,347 2,674 2,833 2,538 2,834 2,813 2,358 2,251 2,126 1,887 "•5085 •3385 •3351 March 23, 1878 April 24 „ May 24 „ June 24 ,, July 24 „ August 24 „ September 24 ,, October 24 „ November 23 „ December 24 ,, January 24, 1879 February 24 „ March 24 „ 2,396 2,323 2,052 1,992 1,876 2,404 I,7o8 2,008 2,008 1,879 1,251 2,146 1,697 1,897 1,727 1,777 i,777 1,715 i,4S° i,546 1,436 2,164 1,217 1,372 April 24, 1879 May 24 „ June 24 „ July 25 August 23 „ September 24 „ October „ f November 24 „ December 24 „ January 24, 1880 February 24 „ March 24 ,, 2,168 1,707 1,810 2,227 1^818 1,818 1,502 1,548 1,630 1,431 1,558 1,613 1,35° 1,724 1,678 1,723 1,146