CLASSIFICATION AND CREATION. 



45 



hanging to a certain distance within the first. 

 This inner sac has an aperture in the bottom, 

 through which whatever enters it passes into the 

 main cavity of the body. A central opening in 



Vertical section of a contracted Sea-Anemone or Actinia : o, mouth ; *, ten- 

 tacles ; *, inner sac or stomach ; b, main cavity ; ff, reproductive organs ; 

 g, radiating partition ; e e e, radiating chambers ; c c, circular openings 

 in the partitions ; a a, lower floor. The tentacles are drawn in. 



the top forms a kind of mouth, around which 

 are radiating tentacles connecting with the open 

 chambers formed by the partitions within. Cut- 



Sea-Anemone or Actinia, moderately expanded. 



ting such an animal across in a transverse sec- 

 tion, we shall see the radiation of the partitions 



