21 
Man friar nemlig af Observationerno følgende Mid- 
delværdier : 
Dybdeintervaller. 
Engelske 
Vn Meter, 
r avne. , . 
Middcl- 
temp. 
n C. 
Midlore 
Kvu-lstof- 
mrcngde 
observoret 
Kvielstof- 
jnqpngde 
beregnet. 
Dif- 
ferent». 
O 
0 
6.4 
13-07 
12.93 
—o' 1 4 
0 1 oo 
1 •o 
co 
T 
0 
. ’ 2-7 ’ 
13.98 
I 3-78 
— 0.20 
too — 300 
183—549 
1.0 
14-15 
14.17 
0.02 
300 — 600 
349—1097 
— 0.6 
14-54 
14-34 
0.00 
600 — 1000 
1097—1829 
— 0.8 
14.04 
1458 
0-54 
1000—1760 
1829— 3219 
— 1.4 
14.38 
14-72 
O.34 
Naar den midlere Kvælstofmængde lier i de dy here 
Lag er funded noget lavere' end man skulde tente, da har 
dette sin Grund i. at der ved de 5 Observationer No. 17. 
22, 33, 3(1 og 37. alle hidrørende fra Vandprøvér fra det 
i 1877 undefsøgte Strøg, er fundet en ca. 1.5 CC., lavere 
Gehalt, end de ved sin Temperatur Vilde kunne optage 
ved almiudtfligt Atmosphæretryk. Forresten vil elter alle 
de øvrige Observationer at dømme ogsaa r de større Dyb 
Kvælstofmængden findes at stemme overens med den af | 
Formelen beregnede. 
En lignende Sammenligning 1 er af Buchanan gjort 
mellem de af ham for de sydlige Have fundne Tal og de 
af Bunsen for destilleret Vand opstillede. I)er optræder 
ved denne Sammenligning især ved de lavere Temperaturer 
ikke ubetydelige Djfferentser paa lige op til over 1 CC. 
pr. Litre, men disse vil ved Sammenligning med de efter 
Forfatterens ’Formel beregnede Tal saa godt som bortfakle, 
idet man faar : 
Dybde 
i 
Fod. . 
Midlere 
Temperatur. 
°C. 
Kva-lstof- 
imengde 
efter 
Buchanan. 
Ivvaelstof- 
• mængde 
efter 
Formelen. 
Difi'crents. 
• 600 
14.6 
1 1.26 
11.04 
— 0.22 
1200 
13.0. 
11.71 
11.41 
—O.3O 
1800 
6.9 
13.00 .. 
. 12.81 
— 0.19 
2400 
5 -i 
13-10 . 
13-23 
0 . 13 * 
4800 
2,5 
13.82 
13.82 
0.00 
derover 
i -5 
14-37 
14-05 
— -0.32 
Det frekigaar heraf, at Kvælstofmængden, saaledes 
som det allerede af Dr. .Jacobsen og Andre er antaget ? 
ikke i mindste Maade retter sig efter de i de store Dyb 
herskende Tryk men kun afhænger af Temperaturen. Den 
eneste rimelige Fortolkning udelukker Muligheden for,-- at 
Tryk- og Temperaturdifferentser i de under Overfladen 
as will be 
mean values 
seen from 
the following Table showing the 
Intervals of Depth. 
Mean 
Mean 
\ mount 
Amount 
of 
Dif- 
English 
. Fathoms. 
Metres. 
°C. 
of Nitr. 
observed. 
\ itrogen 
computed. 
foronco. 
O 
O 
6'. 4 
‘ 3-07 
12-93 
—0.14 
0^ 100 
0 — 183 
2-7 
13.98 
13-78 
— 0.20 
100 — 300 
183—549 
1.0 
14-15 
14.17 
0 02 
. 300 — 600 
549 1097 
— 0.6 
14 - 54 . 
« 4-54 
0.00 
600 — 1000 
1097 *829 
—0.8 
14.04 
14-58 
0.54 
1000 1760 
1829 3219 
— 1.4 
14-38 
14.72 
0-34 
The mean quantity of nitrogen in the deeper strata 
proved, accordingly, somewhat lower than there was reason 
to expect; hut this arose from the proportion determined 
by 5 of the observations, viz. Nos. 17. 22. 33. 3(5, and 
37 ;ill of them referring to samples of water obtained 
from , the tract of ocean investigated in 1877 having 
been about l.fr less than could be absorbed at the 
same •temperature under ordinary atmospheric pressure. 
For the rest, judging from all the other observations, the 
proportion of nitrogen observed, even at greater depths, 
will be found to agree with that computed by the formula, 
4 similar comparison 1 was instituted by Buchanan 
between his results for the water of the Southern Sums 
and the figures found by Bunsen for distilled water. The 
differences resulting from this comparison, , more especially 
for a low temperature, are considerable, the greatest reach- 
ing l cc per litre; but, on comparing them with the figures 
given -by the author’s formula, they will lie found almost 
to vanish, as appears. from the following Table. 
Dopth 
in 
Feet. 
Mean 
Temperature. 
°C. 
Amount of 
Nitrogen ac- 
cord. to 
Buchanan. 
Amount of 
Nitrogen 
comp, by the 
Formula. 
Difference. 
600 
14.6 
1 1.26 
1 1.04 
— 0.22 
1200 
13-0 
11-71 
11. 41 
—0.30 
1800 
6-9 
13.00 
12.81 
—0.19 
2400 
5 -i 
13-10 
13-23 
0.13 
4800 
’ 2.5 
13-82 
13.82 
0.00 
Greater 
Depths. 
1-5 
14-37 
14.05 
—0.32 
Hence the amount of nitrogen, as previously assumed 
by Dr. Jacobsen and others, can in ho wise be affected 
by the increase of pressure at great -depths, but must ob- 
viously be dependent on temperature, alone. The results 
of these observations exclude, therefore, the possibility of 
ditfere.nces in temperature and pressure at depths below 
1 Ber. Berl. chem. Ges. — 11 — - 110 . 
Bor. Berl. chcnf. (ion.- 11, p. 110. 
