In the latitude of Mont Blanc, but on an island as
far westward as Central North America, tree-ferns
And
parasitical Orchideae would thrive amidst the thick woods.
Even as far north as central Denmark, humming-birds would be
seen fluttering about delicate flowers, and parrots feeding
amidst the evergreen woods; and in the sea there, we should
have a Voluta, and all the shells of large size and vigorous
growth. Nevertheless, on some islands only 360 miles northward
of our new Cape Horn in Denmark, a carcass buried
in the soil (or if washed into a shallow sea, and covered up
with mud) would be preserved perpetually frozen. If some
bold navigator attempted to penetrate northward of these
islands, he would run a thousand dangers amidst gigantic
icebergs, on some of which he would see great blocks of rock
borne far away from their original site. Another island of
large size in the latitude of southern Scotland, but twice as
far to the west, would be "almost wholly covered with
everlasting snow," and would have each bay terminated by
ice-cliffs, whence great masses would be yearly detached: this
island would boast only of a little moss, grass, and burnet,
and a titlark would be its only land inhabitant. From our
new Cape Horn in Denmark, a chain of mountains, scarcely
half the height of the Alps, would run in a straight line due
southward; and on its western flank every deep creek of the
sea, or fiord, would end in "bold and astonishing glaciers."
These lonely channels would frequently reverberate with the
falls of ice, and so often would great waves rush along their
coasts; numerous icebergs, some as tall as cathedrals, and
occasionally loaded with "no inconsiderable blocks of rock,"
would be stranded on the outlying islets; at intervals violent
earthquakes would shoot prodigious masses of ice into the
waters below. Lastly, some missionaries attempting to penetrate
a long arm of the sea, would behold the not lofty surrounding
mountains, sending down their many grand icy streams
to the sea-coast, and their progress in the boats would
be checked by the innumerable floating icebergs, some small
and some great; and this would have occurred on our twenty-
second of June, and where the Lake of Geneva is now spread
out! [21]
[1] The south-westerly breezes are generally very dry.
January 29th, being at anchor under Cape Gregory: a very
hard gale from W. by S., clear sky with few cumuli;
temperature 57 degs., dew-point 36 degs., - difference
21 degs. On January 15th, at Port St. Julian: in the
morning, light winds with much rain, followed by a very
heavy squall with rain, - settled into heavy gale with
large cumuli, - cleared up, blowing very strong from S.S.W.
Temperature 60 degs., dew-point 42 degs., - difference
18 degs.
[2] Rengger, Natur. der Saeugethiere von Paraguay. S. 334.
[3] Captain Fitz Roy informs me that in April (our October),
the leaves of those trees which grow near the base of the
mountains change colour, but not those on the more elevated
parts.
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