EVOLUTION 



945 



tial aspects, of self-maintaining and nutrition, and species-continuing 

 reproduction; each tending to its finest developments, yet with 

 perpetual minor interaction of these, into sub-rhythms of variations, 

 often hard to trace and understand. In a way, then, we may thus 



Fig. i6i. 



Contrasted Gladiolus-like Types. From specimens, i. The more grassy, small- 

 flowered Montbretia; 2, an intermediate type; 3, a very floral Gladiolus. 



still speak of these as "spontaneous" variations, so long as we cannot 

 trace out their intimate causes, yet not as merely "indefinite varia- 

 tions", since here we see an orderly rhythm of these fundamental 

 life-conditions, not heretofore done adequate justice to on Darwin's 

 and Wallace's line of interpretation oi floral forms, i.e. as so many 



VOL. II p 



