HYBRIDISING AND CROSS-BREEDING. 137 



improved largely by carefully selecting such seminal forms as 

 come up to our assumed ideas of perfection or the fashion of 

 the time. 



Bud Sports are variations originating from a " bud, tubercle, 

 or other organ of a single individual by division or extension." 

 Decandolle says : " Sports must originate from certain causes, 

 as an ancestor of a different form, an actual or anterior 

 influence of climate, &c. ; but the obscurity of these causes is 

 precisely what justifies the use of the word." 



