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la Jf}jä«ëô Ecr_
THE ”BIOLOGY OF FISHES
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CHAPTER
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IE,.we describe a
in the
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water; the demtronWOüld
for
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:purposeseçg…;Yet
knôws,, that“:manyother1nds ‘bf
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Ï ammalshve
and
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is,…if they can be felt and handled;f
Wes-may remember
that shes breathe. by means of’gills,Ï which excludes
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the higher animals, and again that they pϾss some'lndԙf t;
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backbone,’ which Shuts out the IOWer‘
Héhæ "&
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more precise denition would be, that shes are
vertebrates living in the water.
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,
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ŸBUt—Îhé feW words of a denition
only the barest
outlines of the picture. Fishes have a structure
eminently suitable to life in the Water, Wé:îr‘hüst know
something of the former to understand the
And
What sort of life do they lead? Is it all a monotonous '
drinking and feeding, or do they have some kind of sport
and psychical life among themselves? How far away or
how near do they stand to ourselves ? To try and answer
these questions, will be the aim of the succeeding pages.
Meantime, we may consider briey, how the sh has ;cO'me
to be what it is.
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I.
ORIGIN AND NATUÊE
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To say that -a sh mùSf havèj learnt tosw1mbefore1t
became & Sh ï1î1ay seem
';b‘üt there1s ameamng
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