Full resolution (JPEG) - On this page / på denna sida - Chapter XIV
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are thickly grown with seaweed, a species of
bladderwrack, similar to that which abounds on our own coasts,
but of paler colour. The mussels are also very
abundant, but very small; they diminish in size as the water
grows less salt.
The late Professor Edward Forbes brought to light
some very interesting and important facts by
dredging up animals from different depths of the sea-coast.
He found that there were zones of characteristic
animal life, corresponding to zones of depth; and
thereby geologists have been able to come to curious
conclusions respecting the depths of the ancient seas in
which the animals lived, whose fossil fragments tell
the wondrous history of the world’s early growth. A
similar investigation of the plants and animals of
estuaries, and their relation to the varying degrees of
saltness, would, I suspect, be very interesting; especially
as there are many reasons for believing that much of
our coal was deposited in fiords, or even inland lakes.
The Norwegian fiords and the Gulf of Bothnia afford
fine fields for such inquiry.
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