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of the latent heat of its water is well-nigh overlooked. The
influence of its temperature being a few degrees above zero is
of little consequence compared to the quantity of solar energy
stored up in its water as latent heat, which is made useful
by freezing. Moreover the warm temperature of its water is
reduced considerabl)r during its course by the influence of the
atmosphere, but the latent heat is a reserved capital, which
can not be expended before the exact moment of freezing.
East of Newfoundland, at 45° or 47° Lat. N., the arctic
current in spring and early in summer pours great masses of
polar ice into the midst of the Gulf-stream. Another
battlefield of the warm and cold Atlantic currents is, according to
Petermann,1 Irminger2 a. 0, the sea east of Iceland and
west of Beeren Island. In each of these places masses of
drift-ice are melted at the cost of the solar energy stored up
1 Der Golfstrom, Mitth. 1870.
2 Die Temperatur im Nordl. Atl. Meer etc.. Mitth. 1870.
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