Full resolution (JPEG) - On this page / på denna sida - Sidor ...
<< prev. page << föreg. sida << >> nästa sida >> next page >>
Below is the raw OCR text
from the above scanned image.
Do you see an error? Proofread the page now!
Här nedan syns maskintolkade texten från faksimilbilden ovan.
Ser du något fel? Korrekturläs sidan nu!
This page has never been proofread. / Denna sida har aldrig korrekturlästs.
the next series of determinations another specimen of ice-water
from the sea-ice in Kattegatt, obtained in December 1881 at
Mar strand.
When the outer layer of the frozen ice in the dilatometer
is thawed, in order to get the solid cylindre surrounded by a
rind of mercury (see the discription of this operation on page
263 and fig. 2 on plate 1), one or two cc. of water are ordinarily
expelled through the capillary. In this case the water was
found to be of an extremely bitter salt taste. The original
ice-water had thus separated in two parts of different chemical
constituents. The remaining quantity’ of ice in the
dilatometer was naturally deficient in saltness relatively to the ice
formed at first. After the close of the experiment, the melted
ice-water of the dilatometer was examined as usual with
regard to its latent heat, its percentage of chlorine and specific
gravity. The water of sample V was found to possess:
Original sample. Ice-water V.
spec. gr. atq^j; C................ fr.ono I.0053
p. C. of Cl........................ 0.727 0.273.
The important question of the latent heat of the ice-water will
be discussed in the last chapter.
Finally I repeated exactly the same series of operations
and measurements with a real specimen of salt water from
the deeper strata of the Siberian sea, in order to study the
formation of ice from real ocean water. The ice, which had
formed at first in the instrument, on superficial thawing, gave
off a few cc. of a very concentrated solution of bitter taste.
Original sample. Ic -wat«-r VI.
spec. gr. atq—j^C.................. I.0278 I.0094
p. C. Of Cl. ...................... 1.91 0.649.
The numerical results of the determinations on the samples
IV, V, VI are recorded in tables IV, V, VI and are
graphically represented on plate 21 (the volumes of the ice) and on
plate 23 (the vol. of the waters). In the calculation of the
volumes I have started from the assumption
q = 0.00017905
g = 0.00002753
to avoid unnecessary complication. All the numbers given
in this chapter refer to special kinds of sea-ice and cannot
be considered to be fixed constants, of nature, like the
volumes of pure ice and pure water, which must be calculated
with the utmost accuracy attainable in the present state of
physical science.
<< prev. page << föreg. sida << >> nästa sida >> next page >>
