ig BS 
11.398018 log m, = 1.0568208 
0.000025813 log a= 3.4118416—10 
—0.0000003603 log 3 = 3.5566085,—10. 
hvoraf (whence) 
Indsættes disse Værdier, faaes | Substituting these values, we get 
oe i = OO R72 Nag nada agt gr 
Observeret Stand (Observed Reading) i AOD 13 GO 13.00 10.00 7 S08} 
Beregnet Stand (Computed Reading) ii O83 73.68 124 21 © TO? 
IN =O = B -++o .002 —0.03 +0.06 —0.04 +0.01 
Sandsynlig Fejl af en Ligning: Å = + 0.037 mm. | Probable error of an equation: Å = + 0.037 mm. 
: I 
Værdien af m, for tilsvarende Værdier af kan be- | 
regnes paa følgende Maade: | be computed in the following manner: — 
G ¢ Vi I 
IEEE — == 
Cc C }v 1tkatt+ pt 
Vi | 1 — 0.000060306 t + 0.0000079279 #2 — 0.000 000042604 tå 
Efter (According to) Broch er 5 = PE 
a 
© iC ; 
altsaa (hence) im, = ag Å — in (i —at+b?—c?)(1—at—(@—e)P--...) 
@ ic 
ly EG | — mo| (1 — (å + og t + (b — p + Å)  — c 6) 
Ni = 9303.070 — 9291.672 (1 — 0.0000861 19. t + 0.0000082880. f — 0.000 000042604. t) 
mn : 
nm; = 9303.070 — | 3.9680939] (1 — [5.9350990]# + [4.9184969| t* — [2.6294504] £). 
Efter denne Formel beregnes folgende Tabel: 
lowing Table: — 
The value of m, for corresponding values of %, may 
| _ According to this formula, I have computed the fol- 
= 0°.0 09.1 0.02 OR 09.4 OL 09.6 O97 0°.8 0°.9 
—1° 10.52 IO .42 10 .33 10 528 1® oR IO .02 9.92 9:81 G) oii 9.60 
—o0! II 20 Hi 082 AT AG Wi 085 Ni SOW 10 .98 10 .89 10 .80 © oF it 10 .61 
to? I I .4O It 248 II .55 in OG RÅ 7 nn of I I .85 ti O2 I I .09 12 .06 
+19 12 oi2 WD giles) 12.25 12 Qu na 37 12 .43 12 .48 12 .54 12 .59 12 .64 
+ 2° 12 .69 12 .74 12 07/© 12 OR 12 .88 1202 12 .96 I 3 .00 13 .04 13 .08 
Paa Expeditionen i 1878 blev Piezometret No. 52109 
sendt sammen med 3 Dybyandsthermometre 10 Gange til 
Havbunden. Af Lodskuddene, Havvandets specifiske Vægt, 
dets Sammentrykkelighed og Tyngdens Størrelse kan det 
ved Havbunden stedfindende Tryk i Atmosfærer beregnes. 
Trykket som Function af Dybden. 
Er h Dybden i engelske Favne, & 1.82876694 Meter, 
b Tyngdens Tilvæxt med Dybet pr. engelsk Favn = 
0.000 00041608, 
Bredden, 
8 en Constant = 0.00250, 
S Havvandets specifiske Vægt ved Atmosferens Tryk, 
i Dybden h, (Vand af 4° C = 1), 
X Havvandets middel-specifiske Vægt 1 den trykkende 
- Vandsøyle, 
1.82876604 
13-5959 X 0.76 
log 4, = 9.2479368—10, 
a, en Constant = - ONT /00 SSE: 
On the cruise in 1878, the piezometer No. 32109 
was sent to the bottom 10 times, along with 3 deep-sea 
thermometers. From the sounded depth, the specific gravity 
of the sea-water, its compressibility, and the force of gravity, 
the pressure at the bottom, in atmospheres, may be computed. 
The Pressure as Function of the Depth. 
Let Åh be the depth in English fathoms, (1 fathom = 
1.82876694 metre) ; 
b the increase of gravity with depth per Eng. fath. 
= 0.00000041608; 
g the latitude; 
f a constant = 0.00259; 
S the specific gravity of the sea-water (atmospheric 
pressure), at the depth h (water of 4° C, = 1); 
N the mean specific gravity of the sea-water in the 
pressing column of water; 
1.82876694 
13.5959 X 0.76 
log a = 9.2479368— 10; 
a a constant = = 0.1769851; 
