t 
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 im 
Vertical section of a contracted Sea-Anemone or Actinia: 0, mouth ; ¢, ten- 
tacles ; s, inner sac or stomach ; b, main cavity ; f/f, reproductive organs ; 
g, radiating partition; eee, radiating chambers; cc, circular openings 
in the partitions; aa, 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 
