THE OCEAN WORLD. 



navigate Lake Thau meet," says Fredol, "at certain periods of the 

 year with numerous colonies of a species about the size of a small 

 melon, nearly transparent, whitish like water when it is mixed with 



Fig. 54. Chrysaora Gaudichaudi. 



an extract of aniseed. One would be tempted to take these animals 

 at first for a collection of floating muslin bonnets/' 



The Medusae are furnished with a mouth placed habitually in the 

 middle of a nectocalyx or of an umbrella. This mouth is rarely 

 unoccupied. Small molluscs, young crustaceans, and annelids, form 

 their ordinary food. In spite of their soft substance, they are most 



