II] 



BIOLOGICAL FOUNDATIONS 



39 



individuals. The second individual and the re- 

 maining members of the colony, which are all formed 



Fig. 3. Hydra, semi-diagrammatic, showing a bud-rudiment on the 

 right and an advanced bud on the left, m, mouth ; t, tentacles ; 

 t', tentacles of bud. (Magnified.) 



