Temperatur- 
intorval. 
Midlere 
Temperatur. 
Midlere 
Kvælstof» 
mængde. 
Beregnet 
Kvælstof- 
mivngde. 
Different». 
under io° 
6°-5 
13-2 
12. Q 
P -3 
10—15 
1 2 .1 
12.0 
1 1.6 
-0.4 
?5 — 20 
16 .9 
1 1.0 
10.5 1 
—0.5 
Her Andes altsaa overalt en Kvælstofgehalt svarende 
til en noget lavere Temperatur end den obsérvetede og det 
i §t<rrkest Grad lor de høiere Temperaturer, eller da Tem- 
peraturen aftager med Dybden, for de øverst liggende 
Vandlag. Naar' man erindrer, at Jacobsens Observation» 
ere udførté r Ettersommeren og for det Meste paa Vand- 
prøver fra saa smaa Dyb,. at Luft- og Yandtempernjturens 
aarlige Variation kan tenkes at have gjort sig gjældende, 
vil dette ikke være saa vanskeligt at forklare' gjennom 
\ andets Opvarmniug i Sonimermaanederne, modems Kvæl- 
stofinængden maa antages at rette sig efter en Temperatur 
mindst lige saa lav som den aarlige Middeltemperatur. 
At lignende Phænomener ikke ogsaa ere observerede’ 
i de øvre Lag af det af den ilorske Nordhavsexpedition 
undersøgte Hav. har sin simple Forklaringsgrund deri, at 
Lufttemperaturen der selv om Sommeren ikke er høiere 
end Overfladetériiperaturen hellere omvendt. 
. ' Don for Intervallet fra 0 til 15 ° udledede Formel er her forud- 
sat at, giælde ogsaa fra 15 til 20 ". 
Intervals 
T 0f 
1 omperaturo. 
Meau 
Temperature. 
Mean 
Amount, uf 
Nitrpgen. 
Computed 
Amount of 
Nitrogen. 
Difference. 
bolow 1 0" 
6°-5 
13-2 
—0.5 
0 
[ 
12 .i 
12.0 
1 1 
O- 1 
15—20 
16 .9 
1 1.0 
IO.5 1 
°*5 
The proportion of nitrogen in this Table * corresponds 
accordingly to a somewhat lower temperature tlmu that 
observed, especially for the higher temperatures, or rather, 
since the temperature diminishes' with the depth for the 
upper strata of the water. If. however,, we bear in mind 
that. Jacobsen’s observations were instituted at the latter 
end oi summer, and the majority with samples of water 
obtained from such trifling depths that the annual .variation 
m the temperature of air and water probably exerted 
some influence, this will not he difficult to account for. 
| by reason of the heat stored in the water during the 
summer months, whereas the amount of nitrogen must he 
regulated by a temperature at least as low as the mean 
annual temperature. 
Tlmt similar phenomena were not observed in the upper 
strata of the water throughout the ti'act of ocean investigated 
on the Norwegian North-Atlantie Expedition, arises simply 
•irom the tact, that the temperature of the air in those 
regions does not even in summer exceed tlmt of the water 
at the surface,, nay the reverse is rather the case. 
1 Hie formula deduced for the interval from 0 ° to |.V is hore an. 
sumed to be correct for that .emending from i:. n to 2Q°. 
