!.. MKi.i.Aii;. — iiiiciiOisi-Ks i:mi;i; i:llks uiax i-si'ÈŒs hégagéks D'l.n iiMiuiui;. -jor. 



aI)soliitely pure, bul llial llic liybrid coudilion l'roni whicli they are derived lias 

 inodified their inlenial .structure and Iheir heredilary characteristics. allhough 

 rxlonially tlioy romain unclianged. The speeies hâve in fael, inneased llie 

 luimlier, or ailered Ihe naliire. of their pliysiologica! unils. 



H is Uns interprétation, and Ihe i'acis Ironi whieli il is deduced, ihal hâve 

 led ns lo make llie proposition contained in onr tille, thaï Iwo speeies derived 

 t'rom a hybrid, when ciDs-^cd willi c-hIi othcr. do noi ohey Ihe Mendeliaii law of 

 dominance. 



