No. 629] DARWIN AND HYBBIDIZATIOX 541 



relations, if these be kept under llic -mnr rnn,liih.ii> ol life, almost 

 always leads to decreased size, wenkiics- ^u iiliiy i la. 2: 27). 



In "Cross and Self Fertilization," Darwin a^rain dis- 

 cusses the effects of crossing as follows, expressing the 

 view: 



Darwin also remarks upon tlu' lircatcr powci- ol the 

 cross-fertilized phiTils m cx] xTitiiciit to st.-uul r\i)o- 

 sure, the crossed plants ciKliiniiii- >U(M('ii rcniox al l i-oin 

 greenhouse to ont-ot-door coiMlitioti^ lu'ttor tiian ilnl the 

 self-fertilized, and also roi-tiii-:- cold and iiiti'iiijKTate 

 w^eather conditions niorc -iicc'-^lullw Tins wa- tlic <'ase 

 w^itli morning glorv and with Min/iihis. 



