wi—îh;6 rays“
of
the
parentSW1th 8 ray's,
average or abbù‘t79 _; -,…
;
eSpecially the. latter“;
,
‘
character of their parents to a verylargeextent,andthe
variation from the parents ight be accountedforbythe
,
tendency of o”spriñg to revert to the
f
"i
'
'
(Gâlt‘on’s law of regression); but it is apparth thattheresultg
do not agree With this rule.
In both cases the value obtäîèd ' '
is much higher than we should eXpe'ct. , Adêône may doüht, »
’
therefore,_ whether the
“
outer
”
factors have really
exclüded. For Iohs. Schmidt the outcf factors'seel to be
'
only the î_temperature and s'alinity; yet one Would think;
,,
that 'au the eXternal“ surroundings Should be taker1_“ito
acCount, forfexample, the size or capacity of the female sh._
'AS,W6 shall see, this is undoubtedly a factor in producing:
'
var1aüonsHence we can hardly aSsume‘
female
_
'
W1th0lÿ6dorsalrayspi=êsehts—_the same 'opportüniti‘es of '
_
developmenttmtsoñsprmgasoneofæays
:
Th1shttleshLebrsteshasother Characteristicsïwhich
,
lend
toexpenmeutThefemale1s—_plain}îgana*
,
'
-
unifori in“
,
colOurs , “difïer accordmgtotnedlerentpla€esWhencelt :
,
'
'
,
comes;
form, (A) _hâ'Snoblackp1gmentbŒagreat f
deal of red, theother (B) hasseveralblackspots,onehand—
" "
j
Some spot in particular on thedorsaln,thoughthere13
_
a considerable amount of variation (PlateXl); '!
’
'
the'se dier6nt male formswith the
kind of fémale, '
'
-
JohaSohïidt "obtained aiseries of interesting results.
;
_
'
=
Inthe
the male B was
'
w1thanordmaryfemale from the A group.; all the males
,
'
Without ”excepti'0n (998) gave
the B spot.
One of thermale
Was then paireä_‘d-“With another female of
group ; here-again all the “male“ Offspring hadtheBspot,
and
later
Then{a
,
AB
with
*
'
"'
and once more ;ä‘ll the …malès (3 32)
of
_
tl1e sametype—
Withoutsp0t.
Ï
,
‘
'