202 



ANIMAL LIFE 



These and other needed gifts the waters possess. 

 The open sea rocks them day and night ; its even 

 temperature shields them ; its foam invigorates and 

 aerates them. Nor has their mother left them without 





r' r y ->-^.-l^— ^ l O j ^"|J\ 





Fig. 36. — The Palolo-worrn {Munice viridis) from Samoa. This sea-worm 

 consists of two obvious regions, a head-end hearing tentacles, and a far 

 longer tail-end bearing eye-spots. These two portions part company 

 on the nights of a certain tide in October and November, the tail-end 

 going out to sea, the head-end remaining on the reef and in time 

 regenerating a new tail. — {After U'oodworlh.) 



some safeguards. She liberates them in myriads 

 of glassy, invisible droplets from a spot whence the 

 current sets for the shore ; she provides them with a 

 float to keep them near the surface ; so that when 



