-=
THE‘,BIOLQGYf OE FISHES - ï
.
'
,
thèfHerringects'àljlîes‘3ÿlrereî‘c is*äbsèt
the
,' ' '_,_It
rmd-lme 'o'f‘thevside, 'butïbyfd‘
'
me‘às:alWàysg
twoor
The line really consiStsof a:canal0r tûb'e sunk into th6skin}
'
“and, Opening -to—thefexærior‘,by a.series of—,pôî'es, ’vvhlçh -canr
be,Seen When & scale is examined; There is*agfêup “of
senSory cells beneath,0r near each pore,
serve to
the“sh_impresgäons Of minute diere'n‘çes'in the pressure
.
of currents of
for_âàmple, that the
.
'
'
,
blind cavevshescan' t—elliWh’et—hèy
roCk
,
‘
'
Wayè
own movemenüeècted
'
'
'
jf
'
,;Ç
Î. *
,
,,
:
*Î
‘
‘
The
a more Complicaîed
,—
'
meritçof
of the skin,
.
It respends
'
—,
tc)” m@rejv—iolenî shakingjôf the water,— läù—t it »iS not believéd
'
really hear—” as we
Like
line!sysfëmfîtiS of use in—th‘e-balan3în‘g1-andorientätïäof
_
i
'
the
,
or
,
btdlithsfwhicheprobably serve as dà,1pers on‘ the
'
disturbances' ,
'
'
from-the ouf-side… By {îean3iof these otoliths it is possible“
1
'
_
in manÿdaseSt0 determine the âge of sheS,
are not
'
’_
'
th0 old. (PLU). The*heàriùg
on the
sidèof the head behind the eye and has
“
-
"
__' .
…
has been formed
’
’ fr9m ‘theëgladulaäorgas of the skin“;— Perhapstheeyealw
—,
Insomemysæuous mannertheglandsfldorsmkmtothe
underlymgîlSSêSthenbeœmeshutot0varymgdegrees '—ÏÏ 1 :
Whstfemammgrœm1ngmtücontactwûhthecentral
"
_]
The:
;
,
'
”
on
_' =
:
'
'b’eèn i—foudæin: the caseof‘cheeyeforexample that ti f—— :
'
_
; C'ommônr
in thé. jWätèt‘
;..;ç;én_tainingî=déVebpinfg: embryes;the
.)
,
0fth€tW96Y€Stend tQ
ÎÏintoËa:sin—g'lea .fmediäñ ‘,
‘
01cyc10peaneye
:
_