»
ECONOMY—OF THE BODY—I
«
125
be some meaning in suCh a—view. But; the majority are
carnivorous, the Elastnobranchs, exclusively
_
So; ahd,fone
"
may think With some reason, that
is a; nuisance
'
and a source
danger to the latter. In,,aÿnyïbase, itf:is
'
not a progressive character.
the frogs
the .
_(Diphoi), they
’
by at once gettingridfof {this
The process of digestion in shes is
to that
"
"
'
higher animals and—is carried
»
In general, that is,…but in-partiCülai‘g there-isa great am0unt
'
_
of variation in the, distribution of) the secteting glands and
ferments_._ : Mucusgglands 'in ”the form of goblist cells: are ' _ ' :
abundant everywhere from the mouth to the rectum.
"
st0mach,— as mentioned,is chiey a retaining organ and gastric
:
glands are »o'ccasionalljy absent and often restricted to the
'
'rstjpart. On the other hand, the digestive ferment pepsin
'
=isïf‘foünd in some cases (Eels, Carp) n0t only in the stoma'ch
but—_ also » in the intestine (Kmkenberg, 1877). _Acid_'
secreting cells are -alfsoÿresent in the stomach (Stirling;Ç1885)
«but
_,
'
'
'
,
.{
The
is the duodeïmm and »it;;is
—,
herethatwendthegreaæstvaneW in-shes: In adition
.
fitothetweordmary
îithere' -is==a=mystê0sÿ ?
; f 1unâpecuhartoshesthepylonccæca(Flg3m®The f
;.1ivëfis‘ :Îà»lârge ;brg'an,
;
»
behind the
,'
bladder is usually but
and there maybe
_
"
Ï
as many as three separate hepatic ducts. …Thejpancrezis
»
_'is_well_-developed in the Elasmobranchs, Acipenser,and in
_
'_"fthe l;larÿal T eleosts, but in the adults of the latter it'becomèS —
»'
diffuse, isolated lobules ocC'urrig in the
'
thestomachand,mtestine and even:in the substance of the
—'
openfrom
.:
'
are eXt-_remely - irreg'ulaf 1nthe1rappear—
=
,
‘
Theyare quite—Wanng in the :Diphoiganî%Elàfëñmäfil:;
theGreenlandshark ? 'Î ' Ëg. :}
—
'
-‘Laemargus?ï(ÎÏÈu—tèr3; 1;873£)zàgd someSkatœ(Gegenbaur
:_
1392).—; AmngthT1t thy1bntnmny
ECONOMY—OF THE BODY—I
«
125
be some meaning in suCh a—view. But; the majority are
carnivorous, the Elastnobranchs, exclusively
_
So; ahd,fone
"
may think With some reason, that
is a; nuisance
'
and a source
danger to the latter. In,,aÿnyïbase, itf:is
'
not a progressive character.
the frogs
the .
_(Diphoi), they
’
by at once gettingridfof {this
The process of digestion in shes is
to that
"
"
'
higher animals and—is carried
»
In general, that is,…but in-partiCülai‘g there-isa great am0unt
'
_
of variation in the, distribution of) the secteting glands and
ferments_._ : Mucusgglands 'in ”the form of goblist cells: are ' _ ' :
abundant everywhere from the mouth to the rectum.
"
st0mach,— as mentioned,is chiey a retaining organ and gastric
:
glands are »o'ccasionalljy absent and often restricted to the
'
'rstjpart. On the other hand, the digestive ferment pepsin
'
=isïf‘foünd in some cases (Eels, Carp) n0t only in the stoma'ch
but—_ also » in the intestine (Kmkenberg, 1877). _Acid_'
secreting cells are -alfsoÿresent in the stomach (Stirling;Ç1885)
«but
_,
'
'
'
,
.{
The
is the duodeïmm and »it;;is
—,
herethatwendthegreaæstvaneW in-shes: In adition
.
fitothetweordmary
îithere' -is==a=mystê0sÿ ?
; f 1unâpecuhartoshesthepylonccæca(Flg3m®The f
;.1ivëfis‘ :Îà»lârge ;brg'an,
;
»
behind the
,'
bladder is usually but
and there maybe
_
"
Ï
as many as three separate hepatic ducts. …Thejpancrezis
»
_'is_well_-developed in the Elasmobranchs, Acipenser,and in
_
'_"fthe l;larÿal T eleosts, but in the adults of the latter it'becomèS —
»'
diffuse, isolated lobules ocC'urrig in the
'
thestomachand,mtestine and even:in the substance of the
—'
openfrom
.:
'
are eXt-_remely - irreg'ulaf 1nthe1rappear—
=
,
‘
Theyare quite—Wanng in the :Diphoiganî%Elàfëñmäfil:;
theGreenlandshark ? 'Î ' Ëg. :}
—
'
-‘Laemargus?ï(ÎÏÈu—tèr3; 1;873£)zàgd someSkatœ(Gegenbaur
:_
1392).—; AmngthT1t thy1bntnmny