STRUCTURE OF ANTHOZOA :—SEA-ANEMONE. 133 
cavities around the stomach, which are destined to pre- 
pare the generative products. In fig. 73, we have a repre- 
sentation of the Sea-Anemone, as seen from above ; showing 
its mouth in the centre, surrounded by its numerous radi- 
ating tentacula ; these are often brightly coloured, and give to 
the animal the appearance of a beautiful flower. In fig. 74, a 
similar animal is represented, cut open to show its interior. 
Pig. 73.—Sea-ANEMONE, seen Fig. 74.—Sectioy or Sza-ANEMONE, 
from above. a, cavity of stomach; 5, surrounding 
chambers. 
The mouth is seen to open into a rounded stomach, a, which 
has no other orifice outwards ; and round this stomach there is 
a series of radiating membranous partitions, which divide the 
space intervening between it and the outer covering of the 
body into numerous chambers, 6. Within these chambers, and 
attached to their partition-walls, are found the bodies which 
are commonly designated ovaries, but which contain sperm- 
cells or germ-cells according to the sex. It is doubtful 
whether these two products are ever formed by the same 
individual, as they are in the Hydra. The Sea-Anemone does 
not usually multiply itself by budding, though some species 
do so; but large numbers of young are produced from the 
eggs, which are fertilized and partly developed whilst still 
within the ovarian chambers, and these make their way into 
the stomach through an aperture at its deepest point, and 
finally escape by the mouth. 
_ 127. The Sea-Anemone itself, like the Hydra, is a solitary 
animal, capable of shifting its place at will; and it forms no 
stony skeleton or support. But there are other animals of the 
same general structure, which have the power of depositing 
‘stony matter in the membrane of their base or foot, and in 
the membranous partitions between the chambers; and this 
stony deposit forms a Coral or Madrepore, such as is shown 
