14 Lessons in Zoology. 



a complete hydra ; that if slit in varioas ways, a whole 

 colony may be produced , from one (Figs. 12-13) ; and 

 when one is turned inside out, it goes on eating, and ap- 

 pears to enjoy life quite as much as before. 



In tide-pools and on the seaweed along onr coast we find giaoe- 

 fnl, delicate, flower-like olnsters, often mistaken for sea-mosses. 

 These are hydroids, or h;dra-like animals, whose bnds remain con- 

 nected 9nd form colonies. 



