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been blown with 1869
flown with 1859 1860 1861 1866
been blown by 1872

shown, as remarked by 1859 1860 1861 1866 1869
illustrated, according to 1872

I can show, are the greatest wanderers, and 1861 1866 1869
I can show are the greatest wanderers, and 1859 1860
wander more than those of any other; and they 1872

would 1859 1860 1861 1866 1869
on their feet would 1872

their feet; and when making 1866 1869
their feet; when making 1859 1860 1861
and when gaining the 1872

the same fresh-water 1869
fresh-water 1859 1860 1861 1866 1872

unstocked ponds and streams, situated at very distant points. 1869 1872
vast distances, and if consequently the range of these plants was not very great. 1859 1860 1861 1866

the nearest land: how much farther it might have been blown with a favouring gale no one can tell.
With respect to plants, it has long been known what enormous ranges many
fresh-water
fresh-water,
and even
marsh-species
marsh species,
marsh-species,
have, both over continents and to the most remote oceanic islands. This is strikingly shown, as remarked by Alph. de Candolle, in
those large
large
groups of terrestrial plants, which have
only a
only a
very few aquatic members; for
the
these
latter seem immediately to acquire, as if in consequence, a
very
very
wide range. I think favourable means of dispersal explain this fact. I have before mentioned that earth
occasionally
occasionally,
though rarely,
though rarely,
adheres in some quantity to the feet and beaks of birds. Wading birds, which frequent the muddy edges of ponds, if suddenly flushed, would be the most likely to have muddy feet. Birds of this
order
order,
I can show, are the greatest wanderers, and are occasionally found on the most remote and barren islands
of
in
the open ocean; they would not be likely to alight on the surface of the sea, so that
any
the
dirt would not be washed
off;
off
their feet; and when making land, they would be sure to fly to their natural fresh-water haunts. I do not believe that botanists are aware how charged the mud of ponds is with
seeds;
seeds:
I have tried several little experiments, but will here give only the most striking case: I took in February three
tablespoonfuls
table-spoonfuls
of mud from three different points, beneath water, on the edge of a little
pond;
pond:
this mud when
dried
dry
weighed only
6 3/4
ounces; I kept it covered up in my study for six months, pulling up and counting each plant as it grew; the plants were of many kinds, and were altogether 537 in number; and yet the viscid mud was all contained in a breakfast cup! Considering these facts, I think it would be an inexplicable circumstance if water-birds did not transport the seeds of the same fresh-water plants to unstocked ponds and streams, situated at very distant points.