GROVv^TH AND MORPHOLOGICAL CHARACTERS. 



59 



340 380 



_^ODays 



Text-figure 1. — Composite growth carves of the males in the parent species and hybrids. 



Grarr.s 

 lOQO 



iSO I iOQ I 3-;'3 I .^SO 



4?0 I 4C Days 



Text-figure 2. — Composite growth curves of the females in the parent species and hybrids. 



