THE ZOOLOGIST 



No. 763.— January, 1905. 



ON BUDDING IN ANIMALS. 



By Prof. McInto% 'Director of the University Museum, and 

 of the Gatty Marine Laboratory, St. Andrews. 



Throughout the Vegetable Kingdom budding and branch- 

 ing are two of the most familiar terms, as well as most salient 

 features. Thus, for instance, the horticulturist introduces into 

 a slit in another plant a bud with a fragment of bark from a 

 rose, and he separates the bulbil from the axil of the leaf in the 

 bulbiferous lily, and inserts it in the ground. The arbori- 

 culturist, again, by the spray of the branches against the wintry 

 sky, can distinguish the species of tree, and he utilizes the ready 

 growth of branches in the formation of a quickset hedge. In the 

 higher forms of animal life — such as the Vertebrates — on the 

 other hand, Harvey's morphological generalization of " Omne 

 vivum ex ovo " holds without exception, and we have to make a 

 considerable descent in the zoological scale before meeting with 

 an approach to the condition in plants, viz. budding and branch- 

 ing. In certain of the more lowly organized types, however, 

 both conditions are often conspicuously present. 



And here let me explain that by budding is meant that con- 

 dition in which an offshoot or new animal arises from a parent- 

 stock or nurse-stock as a rudiment, and gradually develops into 

 the form of the parent, a portion — it may be a very small por- 

 tion— of whose structure is originally utilized in its formation. 

 Zool. 4th ser. vol. IX., Jamtary,1905. b 



