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Tempera-
ture of Cl in
Date. Physical conditions of the sample, etc.
the air. C. _cr
April 22 — 15° Hexagonal crystals resembling snow-j 3.163 p
& 23 to flakes taken from the surface of newly/ frozen ice ]
- 20° 3.091 V
? J »Rossol» in needles 6.1 84 p
? ? a slight quantity of »Rossol» collected
on the ice 3.77 v
It is interesting to follow the increasing concentration of
the overflowing waters and brines with the winter cold. We
know, that such brines have been used at several localities of
the Siberian coast in the fabrication of salt. 1 From the
analyses in table 2, of this chapter, we see, that this method of
fabrication has its drawbacks (at least theoretically). By
concentration by cold the proportion of sodium is diminished
and the amount of magnesium increased in the brine.
Ice formed during the winter 1878—79.
Date. The sample was taken ,, centim: from the surface of the ice-floe. Ice-floe formed by freezing of the seawater during the winter. Physical conditions of the sample, etc. Cl in grammes. titr. by |
1879 Jan. 12 0 c.m. The ice-floe was 75 c.m. thick,greenish 0.432 v
» » 4 » and of homogeneous structure. The 0.134 v
» » 26 » layer of compact snow on its sur- 0.111 v
» » 72—75 » face possessed an amount of 0.585 0.182 v
March 1 0 j, of Cl. The ice-floe was 115 c.m. thick 0.214 v
35 » 0.142 v
7 5 » 0.175 v
115 » 0.133 v
April 1 0 » Thickness of the ice =120 c.m. Its 0.086 v
40 » undermost part was very loose 0.086 v
80 » and porous. 0.119 v
120 » 0.011 v
1 Soumise à la congélation l’eau de mer fournit de la glace pure, et la
partie restée liquide se concentre. On finit par avoir une eau très chargée,
dont on achève la concentration dans des chaudières. On obtient ainsi un
sel impure... (Extrait from Würtz’ Dictionnaire de Chimie.)
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