Traces of Unity in Plants. 23 



given, the frequent appearance of " adventitious buds " 

 points to the potential existence of the same faculty. In 

 fact, the history of a Phyllocactus is the common history 

 of the plant expressed in language which cannot well be 

 misunderstood, and the grand lesson to be learnt from 

 it is that the stem and its branches are only modifica- 

 tions of the same archetypal form which is present, not 

 only in every part of the plant to which attention 

 has been directed, but also in those transitional and 

 doubtful organs, such as tubers and rhizomes, in which 

 the stem and the root would seem, more especially, to 

 come together and be, in the strictest sense of the word, 

 at one. 



And so, in conclusion, it is not too much to say 

 that traces of unity are met with in every part of the 

 plant. 



