GERMINAL SELECTION 



eyes, because th W one, ea„T T "^^.r «---' deterioration of 



and thus the selee" of ^Xye h 3?'"' "•,?" ^» "^ »--'• 



Thp mi\^f ^1 . -^ "^^*^^® impossible. 



whic^a^™fo7warh::v^^ n r-r^ '° ^ «- «■'- '° 



because the vineZr n i„I. h ' *'' "*°''' "** - ""'-'' 



deviations from fe nZa a.-J / "^"" "'"P °^' *'^^ «"-• ^s 

 every species, and a,: ^ h strihrf"'" Ir ^^^7 ""'' "' 

 organ, rarely perhaps -it fl,J 1 TT '"" ""* ™'""^ of the 



a.Sinki„goir21; rot ;,•?": ' '""^ '" every generation, 



becomes^inevitablel Inas h"^ T' "' ^""""^ P^*^"°" 

 functional uselessly of the °''^''"' ^"'"""-^ superfluous. The 



it is disused. tlTrLiU be'?, "'if ,^°/" '""^"^'"^ "'^ '^g-' 

 o».y the n,ost perfect ^aX of TlUhe ll t Zr^'' "'^' 

 can maintain its fnnr.f,- J.i v , separate parts of an organ 



are subject to rr.::!, rre'ei:;::,^ at -'^p- 



xuijgei vaij, ni the direction of 'bettpr' i"f' u ^ i 



reached the hJo-liA^f >. -n • * ^^' ^^'^'^ ah-eady 



variation Isfttjrt "^'"' °'' "^'**"^ ^^^ *-"- 

 Romanes gave expression to this idea th«t fKo 



attached greatX:::::: t ir^htrtzr atif ^^r 



wa. .ntelhgible enough, for. at that time, the validfy of the 



parts h:,r bt: r:betiV° ^■^''■^'" ''- '"^^■'^— °' '"--' 

 S„rtrrt' tri ""' ■■ '■" ''°'- =' "-^«"^r::s:; ;-^ 



I thought T b f / f ^g!»^™t,on of a disused part, and for a tin.c 

 1 thought I had found this m panmixia, that is, in the mincdin. of 

 all together, well and less well equipped alike. This facto do! ^ 

 certamly operate, but the more I thought over it he clearer t 

 beeame to me that there must be some other factor at work "el 

 for whde panmixm might explain the deterioration of an o™ ' 

 could not explain its decrease in si.e, its gradual wearinfawlf an d 



.■n ™d bu^ f ^"pr"r- ,?' ""■' ' '*'^« '-"> foi^: i; y 



f mnmix^ 'T /\ ^f " ' °'»"^ "'^'^ ''''™ ''^'=o"« "»ele.ss 



it panmix.a alone gn.ded the deterioration of the organ, and it was 



T r, 



