IE Gu 
o— I = 520 664 1.0 555 699 
[—2 —1.0 566 710 —1.3 587 732 
23 —L1.0 585 729 —L.4 597 742 
3—4 —1.0 592 736 —1.4 602 747 
NE — LI 596 740 —1.4 606 751 
5 —6 — 1.2 600 745 — 1.4 609 754 
6—7 —1.3 601 746 — 1.4 611 756 
7—8 — 1.4 603 748 —1.4 611 756 
8—9 —1.4 606 751 —1.4 612 757 
9—10 — 1.4 608 753 — 1.4 612 757 
I 0O— I I — 1.5 610 756 
Paa Pl. XX XIX til XLI er vist Fordelingen af Hav- 
vandets Tæthed i de samme Tversnit som i Pl. XXXVI 
til XXXVITI. 
I Tversnit VIII, PI. XXXIX, ligger den største Teet- 
hed ved Bunden og er over 1.0285. I det hele taget ligge 
de tungere Vandlag dybest. 
I Tversnit X er det samme Tilfældet, men Tætheden 
naar ikke højere end mellem 1.0281 og 1.0282. 
I Tversnit XIII er Tætheden i Dybet endnu mindre. 
I dette optræde, i Midten af Havet, Minima paa 1.02795. 
I disse maa Vandet have en Bestræbelse efter at stige tilvejrs. 
I Tversmt XV, Pl. XL, naar Maximumstætheden 
næsten til Bunds med over 1.0281, altsaa større end 1 det 
foregaaende. Her er en Tendents til Synkning i Midten 
af Havet. 
I Tversnit XVII ligger Maximumstætheden paa den 
østre Skraaning af Havbunden. Den er lidt over 1.0280, 
mindre end 1 forrige Snit. 
I Tversnit XIX finder lignende Forhold Sted. 
mum rækker ikke til 1.0280. 
I Tversnit XXII, XXIIT og XXV, Pl. XLI, ligger 
ogsaa Maximum paa Skraaningen, udenfor NSpidsbergen. 
Dens Værdi aftager mod Nord, og Vandet har her en 
synkende Tendents. 
I Længdesnittet XXVII (Greenwich’s Meridian), PI. 
XLI, se vi et Maximum af Tæthed (over 1.0284) paa 
Bundens Skraaning fra Shetland mod Norske-Dybet, et 
Minimum (under 1.0280) ved 68° til 69° Bredde, et Maxi- 
mum (over 1.0281) ved 709 til 71° Bredde, et Minimum 
(under 1.0277) ved 75° Bredde og et Maximum (over 1.0278) 
ved 77° Bredde. Hvor Havets Vand er lettere end Om- 
givelserne, maa det have en Bestræbelse efter at stige opad, 
hvor det er tungere, efter at synke nedad. 
Maxi- 
Fordelingen af Havvandets Tæthed tyder saaledes 
hen paa opstigende og nedstigende Bevægelser i samme. 
Den: virkelige Tæthed, Havvandet har i Dybet, er 
større end den her beregnede, idet Havvandet er sammen- 
trykkeligt. Denne Omstændighed, som vi senere skulle tage 
nærmere 1 Beregning, har ingen merkelig Indflydelse paa 
Fordelingen af Tætheden i samme Niveau, idet i et saadant 
Virkningen af Sammentrykningen bliver den samme i hele 
143 
Eee 
0 
LI—12 —1.5 611 757 
12—13 —1.6 612 758 
3—14 — 1.6 612 758 
14—15 —1.6 612 758 
EG Gu 
0 0 
o— I — 1.0 515 659 — 1.0 528 672 
I—2 — 1.0 560 704 — 1.3 573 718 
2—3 — 1.0 583 727 —1.4 590 735 
Pl. XXXIX to Pl. XLI show the distribution of 
the density of the sea-water throughout the same transverse 
sections as in Pl. XXXVI to Pl. XX XVIII. 
In Transverse Section VIII, Pl. XX XIX, the greatest 
density occurs at the bottom, and reaches upwards of 
1.0285. On the whole, the heaviest strata lie deepest. 
_ In Transverse Section X, the same is the case; but the 
density does not reach higher than between 1.0281 and 1.0282. 
In Transverse Section XIII, the density in the deep 
is still less. In this Section occur in the middle of the 
sea minima of 1.02795. Here, the water must have a 
tendency to rise towards the surface. 
In Transverse Section XV, Pl. XL, the maximum of 
density reaches almost to the bottom, and attains a trifle 
over 1.0281; hence it is greater than in the preceding. 
Here, a tendency to descend oceurs in the middle of the Sea. 
In Transverse Section XVII, the maximum of den- 
sity lies on the eastern declivity of the sea-bed. It attains 
a little over 1.0280, less than in the foregoing Section. 
In Transverse Section XIX, similar conditions are 
found to occur. The maximum does not reach 1.0280. 
In Transverse Sections XXII, XXIII, and XXV, 
Pl. XLI, the maximum also occurs along the declivity,, off 
Spitzbergen. Its value diminishes towards the north, and 
here the water has a tendency to descend. 
In the Longitudinal Section XX VII (meridian of Green- 
wich), Pl. XLI, we observe a maximum of density, reach- 
ing upwards of 1.0284, on the declivity of the bottom, from 
Shetland towards the Norway Deep, a minimum (under 
1.0280) from parallel 68° to parallel 69° N, a maximum 
(exceeding 1.0281) from parallel 70° to 71° N, a minimum 
(less than 1.0277) at parallel 75° N, and a maximum 
(upwards of 1.0278) at parallel 77° N. Where the water 
of the sea is lighter than that surrounding it, there must 
be a tendency to rise; where it is heavier, to sink. 
The distribution of the density of the sea-water would 
thus appear to indicate ascending and descending movements 
in the ocean. 
The actual density of the sea-water in the deep is 
greater than that here calculated, sea-water being compres- 
sible, To this circumstance we shall subsequently revert; it 
has however no appreciable influence on the distribution 
of density in the same surface of level, the effect 
of compression will be the same throughout the whole 
since 
