VARIATION 449 



beam with deeply notched leaves, like those of the oak, a large 

 branch of which had reverted completely, and bore leaves of 

 the ordinary form. I have in my garden a •fern-leaved'' beech, 

 some of the leaves of which have the usual form : Darwin 

 states, in fact, that some shoots of this variety may produce 

 fern-like leaves, normal leaves, and various intermediate forms. 

 Slight inequalities in the nuclear divisions may in this case 

 displace the controlling resultant of the determinants N and 

 N\ supposing that the majority of N^ is only a small one. 



