11 



skelighed vu r l dtiringen over Rekken og ned i Suen. thi 

 ved iSlair mod Skibssiden kunde .Jerntraadene losne og Lod- 

 derne tabes. Man firede den derfor saa hurtig som muligt 

 ned i Våndet, hvor dens Svingninger under Fartøjets Be- 

 vægelser lettere kunde dæmpes og gjøres uskMdeli.ee. 



LodHinerne, der var leverede ai Rebslager Timm i 

 Christiania, var af fineste Sort italiensk Eamp, 2. cm 6 (1 

 Tomme) i Omkreds, voxede os glatstrøgne. De holdt ved 

 anstillet Prove en Vægt af 750 Kilogram (1500 Pd.). De 

 viste sig særdeles gode. otr der blev brugt kim en Line 

 liver Sommer. Linen blev market for hvert hundrede 

 Favne med omviklede og paamerlede Stykker Flagdug af 

 forskjellig Farve. De første 20 Favne var dobbelt Part 

 med Kous og Hex til Loddet, I 1876 var Lodlinen ind- 

 delt i norske Favne, og de første 100 Favne havde Læder- 

 mærker for hver 10 Favne. I 1877 og 1878 var Lodlinen 

 inddelt i engelske Favne og de første 200 Favne opmær- 

 kede for hver 10de Favn. Opmærkningen foretoges om- 

 bord, idet der med Tommestok blev sat Mærker i Dækket 

 for en Længde af 5 Favne, hvilke ogsaa senere brugtes, 

 naar Linen blev eftermaalt os rettet. 



Som anført, havde vi ingen Sprængning af Lodlinen 

 foraarsaget ved at Baillie-Maskinens Lodder ikke gik af 

 Koret. Som Bevis paa Lodlinens Godhed kan anføres, at 

 den under Lodniugen en Gang, medens den altsaa var i 

 fuld Fart, gik i Hus i Loddeblokken, idet denne ikke 

 drejede sig hurtigt nok ind i Planet mellem Linens Parter. 

 Fagtet det voldsomme Ryk og det snevre Rum. hvori Li- 

 nen blev kneben ind i Blokken, over tildels skarpe Kanter, 

 holdt den uden at lide Skade. Den eneste Sprængning af 

 Lodline faudt Sted i 1877 paa Turen nordenfor Tromsø, 

 idet Lodlinen. som under Indhivningen var kommen under 

 Fartøjets Bund. blev grebet af Skruen og sprængt. Ved 

 at bre et Lod i slak Bugt ud fra Stevnen og med Enderne 

 af Linen langs hver af Fartøjets Sider hale det agterud, 

 rykkedes det vagthavende I )fficer, ( "apt. Grieg, at fiske 

 Lodlinen. der havde kastet sig om Propelleraxen saa vidt, 

 at den ikke sank; derved reddedes flere Thermometre og 

 de af dem registrerede Bund-Temperaturer. 



Accumulatoren bestaar af en Samling Kautschuk-Stroppe 

 (Fig- 9), hver bestaaende af 2 sammenfojede Strenge af 

 2™ ( 3 / 4 Toms) Tykkelse. I hver Bugt er en Træ-Kous 

 med Stjert, og Strengene holdes sammen om Trækousene 

 ved tynde Kautschuk-Ringe. Stroppene ere ordnede mel- 

 lem 2 stærke Træskiver. U'".442 (lFod5Tom.) i Diameter 

 Og H'\04o (1.7 Tom.) tykke, med ligesaamange siumm Hul- 

 ler som der er Stroppe. Stjerten tåges gjennem Hullerne 

 og samles om en svær Kous. saaledes at Stroppene blive 

 jevnt stive. Fig. 10 viser Lodde-Accumulatoren. Den be- 



la) in lowering the instrument.: bumping :i !_;.-( i n^t the 

 ship's side was apt to disengage the sling, and thus opca- 

 sion the hiss of tlir sinkers. We therefore get the machine 

 as quickly as possible into the water, where the swinging 

 motion given to it by the rolling of the vessel could 

 produce no injurious result. 



The Sounding-lines, supplied by Mr. Timm, ropemaker 

 of Christiania, were of the best Italian hemp, 1 inch in 

 circumference, with m breaking strain of 1500 pounds, and 

 well waxed and smoothened. They proved of excellent 

 quality. one amply sufficing for a whole cruise. The lines 

 were graduated into hundreds of fathoms by attached slips 

 of different coloured buntine, wrapped round the surface. 

 Each was rove double the first 20 fathoms. and provided 

 with a thimble and a shackle. by which to make iMst the 

 sounding-machine. For the first years cruise, in 1.876, the 

 line was graduated into Norwegian fathoms, and had slips 

 of leather at every It) fathoms of the first hundred; but 

 for the two remaining cruises, in 1877 and 1878. we sub- 

 stituted English measure. graduating the first two hundred 

 fathoms of the line into tens of fathoms. The line was 

 graduated on board. 5 fathoms having been previously 

 measured out along the deck with a foot-rule. These tive- 

 fathom intervals served. too. as a reliable standard when 

 re-measuring and adjusting the line. 



As stated above. the weights were detached at every 

 sounding with the Baillie machine : and hence we never 

 had the line carrv away from their failing to drop off on 

 the instrument striking the bottom. Meanwhile. the ex- 

 cellence of its quality came on one occasion to be se- 

 verely tested. When running out with full velocity. the 

 line suddenlv caught in the sounding-block. which had not 

 readily adjusted itself to the direction tåken by the former 

 on its rapid passage out. But. though brought up in this 

 way with a violent jerk. and jammed besides into the block, 

 partly. too. against sharp edges. the line was strong enough 

 to stand the strain uninjured. The only sounding-line that 

 parted was one used in 1877. on our cruise north of Tromso. 

 We were bauling in the lead. when it got underneath the 

 ship's bottom, fouled the screw. and was broken. By lower- 

 ing a weight over the bows in a slack bight. and then. 

 with the ends of the rope extending one along either side 

 of the vessel. ha uling it aft. the officer of the watch. Cap- 

 tain Grieg, succeeded in fishing the sounding-line. which 

 had tvisted round the screw-shaft just sufficient to keep it 

 from sinking, and thus recovered several thermometers. along 

 with the temperatures they had registered at the bottom. 



The Acewnidator is built up of a number of straps 

 (Fig. 9). each composed of 2 vulcanised india-rubber springs, 

 tliree-quarters of an inch thick. joined lengthwise. In 

 each of the loops is tixed a wooden thimble. with a lan- 

 yard, and the springs are kept together by means of thin 

 india-rubber rings. The straps are kept free from one an- 

 other and equably taut, by stretching them between a 

 couple of strong wooden disks. 1 foot 5 1 a inches in diam- 

 eter and l 3 i inch thick. bored with a hole for every strap. 

 the lanyards being rove through the holes and brought 



