G2 



POPULAR ILLUSTRATIONS OF 



Fig. 77.Acanthostaimts haxtatiis (magnified 300 diam.). Whole animal living. Shell with 

 twenty spines of different sizes. The central capsule from which these emanate is filled 

 with yellow cells. The pseudopodia radiate from the safcode of the central capsule. 



Fig. 78. A. purpurascens (magnified 150 diam.) Whole animal dead. The bi-convcx four- 

 lipped central capsule contains many yellow cells and red pigment granules. 



Let it be borne in mind that to the unaided eye these lovely 

 forms exist only in the form of lumps of jelly, floating for miles on 



