II. Om Kiilsyrcu i Søvaiidet. 
A f a.lli* do Chéffiikere. som før (len tyske Pomerania- 
expeditioni 1 872 anstillede Undersøgelser over Luften 
i Søvnndet, blev der ioruden Bestemmelser af Surstof- 
K vælstofinængden ogsaé samtidig udført Maalinger at den 
under Udkogningen •uddroYiie Kulsyre. og de ■ Qvantiteter, 
man paa denne Maadø fandt. bleve ogsaa bestandig opførte. 
blandt Resultaterue som den samlede Mængda Kulsyre. 
der var opløst i Søvnndet enten fri som G^sart eller bun- 
den til Carbonator som sure Salte. De Resultater, som ad 
denne Vei erholdtes. vise imidlertid bestandig overmaade 
store Uoverensstemmelser ikke alene mellem de torskjellige 
Forfattere men ogsaa mellem (b* enkelte Observationer bos 
en og samme I'Jxperimeiitator, hvor man dog maatte bave _ 
antaget, at en ston e ' Ensartethed i Forsøgenes Udforelse 
skulde have udjevnet Differentsérne. 
80111 Exempel paa. hvor vidt Uoverensstemmelserne 
i de leldre Opgaver strække sig. kan anføres Følgende: 
I en Liter Overfladevand fandt 
Frémy . . . . • 
... 2.2 til 2.8 CC 
Kulsyre *. 
o 
Morren . . . . • • 
. . . 1.6 „ 3.9 
- 
Lewy . . . . . 
. ’ . . 2.4 „ 3.9 - 
— 3 . 
Pisani ...... 
. . . 6!0 „ 8.1 - 

Hunter 
. . . 0-.8- „ 5.9 - 
5 < 
Desudeji faudtes 
eftor en noget anden 
Fremgangs- 
maade af 
Bischof 39.0 CG. 
.Vogel 55.6 til 1 L6.3 — . 7 . 
Ved alle disse a-ldre Undersogelser. hvor der ved l d- 
kogningerue var anvendt tuldt Atmosplueretnk. og b\oi 
II. Oil the Carbonic Acid in 
Sea-water. 
T he several chemists who. previous . to the German -Pom- 
erania Expedition (1872), bad instituted observations 
011 the air present in sea-water, when measuring the amount 
of the oxygen and nitrogen also collected the carbonic acid 
driven off during the process of boiling; and the quantities 
determined were invariably .set down among the results as 
the total amount of carbonic acid actually existing in the 
water, either free as gas or contained, to a less extent, also 111 
bicarbonates. The results thus attained vary however to a 
remarkable extent, and not only as between the different 
experimentalists individually, — the like is also the case with 
the observations, of one and the same person, although 
greater uniformity in the mode of operation should ap- 
parently have tended to eliminate error. 
The. following Table will show the . wide difference 
prevailing between the formulae' of early authors. 
Amount of Carbonic Acid in 1 Litre ‘of Surface-water. 
Frémy . . . • * • •, • ■ 
Morren . . . . . . • • • . • 
Lewi'. . ... . • • • 
Pisaui . . . •• • • • • 
Hunter 
The proportion as found 
process was as follows 
Bischof 
‘ Vogel . . . . v . . . . 
. ... 2.2 to 2.8 CC. l * . 
... 1.6 „ $.9 - -. 
... 2.4 „ 3.9 — 3 , 
. . 6.0 „ 8.1 — 4 * . 
. 0.8 „ 5.9 — \ 
by a- somewhat different 
.... 39.0 CC: 6 . 
. 55.6 to 116.3 — 7 . 
Hence, it appears that the quantity of carbonic acid 
given off under these early experiments, for which the boil- 
1 Coiupt. rend. (>— Old. 
Ohim. l’liw '.) — 12 — ■ 5. * 
a Ann. - - [3] — 17. . Ann. Chem. Ph'nrm. 58 — 328. 
4 Compt. rend. *11 — . r >32. 
6 Jahrosbericht 1861) — 1279. 
0 Chem. Geologic 1 Autl. 2 — 1130. • • 
7 Sclrweigg. .Journ. 8 — 351. 
\Compt. rend. 0, p. 016. 
1 Ånn. Chim. Phys. (3J 12, p. 5. 
» — — — [3] 17. Ann. Chem. Pharm. -58, p. 328. 
4 Compt. rend: 41. p. 532, * 
•’’Liebigs Jahrbericht i860, p. 1279. 
“Chem. Geologic '1 Autl. 2, p. 1130. 
7 Schweigg. Journ! S, p. 351. 
