ANIMALCULES. 723 



spherical members, sometimes clustered together like bunches of berries, 

 and within the protoplasm of the trunks there are capsules in which the 

 young are produced and matured. So complicated are these beautiful 

 colonies, in which a distinct division of labour takes place, that it is difficult 

 to realise that they are nothing more than communities of Protozoans. 



