GENERAL …CHARACTERISTICS
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backbone or ribs, yet some-kind 6ÎÎËÊt—r6ng‘ehening rodruns
down the; mici—line of the body and:above_ it lies the nerve .'
cord, just as in higher vertebrates.—
brain,àud ,senSe
organs are not much to Speak”
by comparison'With-what»are
invertebrates, but the median rod With the dorsal;nerves
makes‘ all the dierenee; A’Worm, it maybe
too
_,
,abbyto have any balance in the water, nothingm
different “parts rmly togethèr ; the sh has-obtained rigidity
Whilst retaining exibilit'y.
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…:But if we try to picture a muscular body trying to moVe
,
through
ofit‘s‘= own _accOrd, we - canreadily see that
:theheac‘i an‘çÎbody
Somewhat coinpressed or atteed,
otherwise it Williolland twist in ariunoomfortable manner.
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;
Now some”of the forms immediately preceding
,
we may belieVe,
.
,
"that—.fthbf shçes have; päSSed
extent '
_
Hàÿing
'.
later, the nsî developed out from
and, :at
=
the endfas‘»à naturâlŸ‘eons'iequence. '_
of.
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shes}àt .thegpresent
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,
repeated
-î Ç‘t'"—"'
.—
.»
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thdnfth W9fmiiäaÿfæjbÇ-E noted:
_
just behind theheadTosomeextentlooksas1f‘che.
nervous and the
finÏ
changing from the
-
_
,
think even; that the body has.notïonlÿ turned
down
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direction to
'
a
i,.
will
:
ia… ——
î
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The Woi‘m‘ isÏ'abieÏtOf—rnove f01wædmadeni‘œdiiection
i l—ad:thuämäysbecs.àidto=‘haYeaheadFurtheiïtmayhave
tnyypttndtt1…g…utth
‘
aresonunuteamaoscopeŒlequuedtoseethemIn
sheshowevertherecanbenodoubtabouttheeyesthe
noseandthelargesweoftheheadImsplamthat