Overtladen nedad til et Minimum og derpaa stadig voxer 
indtil Bunden. 
I disse Tilfælder forslaa ikke Indexthermometrene til 
at registrere de dybere Lags virkelige Temperatur. Sta- 
tion No. 148, 1 Vestfjorden udenfor Bodø, afgiver et ud- 
De 
indklamrede Tal ere ikke anvendte til den endelige Bestem- 
melse af Temperaturen. 
merket Exempel herpaa, som følgende Tabel viser. 
Dybde i Favne | 
(Depth in Fathoms) | 
Indexthermometer, Minimum | 
(Index-Thermometer, Minimum) | 
Kviksølvpiezometer | 
(Mercury-Piezometer ) | 
Vendetherm. Negr. & Zambra | 
(Inverting-Therm., Negr. & Zamb.) | 
| 
| 
Antaget Middel 
(Adopted Mean) GO O8 åg 42 
Man ser, at de to Indexthermometre give næsten 
constante Temperaturer under Minimum i 60 Favne, og 
at de ikke have kunnet angive Temperaturens Tilvæxt i 
de dybere Lag. 
Efter saaledes at have gjort Rede for de anvendte 
Instrumenter, gaar jeg over til at meddele de med samme 
tagne Observationer. 
2. Dybvandstemperatur. 
I Captein Willes Afhandling: *Apparaterne og deres 
Brug” beskrives Fremgangsmaaden ved Maalingen af Dyb- 
vandstemperaturerne saaledes: 
Bundtemperatur. Lodning med Rørlod. Loddet (med 
Vandhenter) løftedes, saasnart Skibets Fart var standset, 
ud over Loddebroen, og firedes, idet en Mand drejede Svej- 
ven paa Rullen, omtrent en Favn ned. Dybvandsthermo- 
metrene sattes fra Loddebroen fast paa Lodlinen 
(Side 19). 
Lodning med Baillie-Maskinen. —Dybvandsthermome- 
trene fastgjordes paa Lodlinen I å 2 Favne over Vand- 
henteren eller Lodderne, hvorpaa man med Indhivningsma- 
skinen udfirede raskt 200 eller 300 Favne (Side 22). 
paafølgende Pause benyttede jeg undertiden til at paasætte 
et Dybvandsthermometer, der kunde registrere Temperatu- 
ren 200 eller 300 Fayne over Bunden. Stationerne 206, 
217, 248, 304, 307, 308, 331, 350, 352. 
Lodlinens Ophaling. Naar Loddet var kommet i 
Bund, gaves de medsendte Dybthermometre Tid til at antage 
det omgivende Vands Temperatur . Naar Loddet nær- 
mede sig Vandskorpen, skede Indhivningen langsommere. 
Thermometrene toges af Linen, under fornøden Stands i 
Indhivningen, eftersom de kom over Rækken paa Lodde- 
broen (Side 24). 
Den * 
42 
from the surface downwards to a minimum, and then 
steadily to increase to the bottom. 
When such is the case, index-thermometers are 
not able to register the true temperature of the deeper 
strata. Station No. 148, in the Vestfjord, off Bodø, 
furnishes a good illustration of this, as may be seen from 
the following Table. The figures enclosed parenthetically 
were not made use of in the final determination of the 
temperature. ; 
40 50 60 70 80 90 100 120 140 
en gg (SG (9) (GO) GO) == EGO) 
AD $9 383 (343) G8) GS) C9) = = 
AO 360 38 38606 AD — AeG 4M § O 
AO §0 88 30 440 = dog AO § © 
We perceive that the two index-thermometers give 
well-nigh constant temperatures below the minimum at a 
depth of 60 fathoms, and also that they have failed to 
indicate the rise of temperature in the deeper strata. 
Having now described the instruments, I shall pass 
on to the observations taken with them. 
2. Deep-sea Temperatures. 
In Capt. Wille’s Memoir, “The Apparatus and How 
Used,” the method adopted for taking! deep-sea temperatures 
was as follows: ; 
Bottom-temperature. Sounding with the Tube-lead. 
As soon as the vessel had lost her headway, the lead 
(with the water-bottle attached) was lifted over the sound- 
ing-bridge, and then lowered about a fathom, a man turn- 
ing the handle of the reel. The deep-sea thermometers 
were fastened to the line from the bridge 5 0 (jam 19), 
Sounding with the Baillie Machine. — The deep-sea 
thermometers were made fast to the lme 1 or 2 fathoms 
above the water-bottle or the weight, after which we rapidly 
veered 200 or 300 fathoms of line with the donkey-engine 
(p. 22). The ensuing pause I sometimes took advantage 
of to fasten on a deep-sea thermometer, with the object of 
registering the temperature 200 or 300 fathoms above the 
bottom. Stations 206, 217, 243, 304, 307, 308, 331, 350, 352. 
Heaving in the Line. — The lead having reached the 
bottom, sufficient time was allowed for the deep-sea ther- 
mometers to assume the temperature of the surrounding 
water... . ‘On the lead nearing the surface of the 
water, the speed of the donkey-engine was reduced. The 
needful stoppages, too, were made to detach the thermom- 
eters as they came over the rail of the sounding-bridge 
(p. 24). . 
