I 



LECTUliE IV. 18.5 



loured glue, and their distribution is parti- 

 cularly beautiful. He was well acquainted 

 with the fact that fluids may be imbibed 

 from various apertures in the branches or 

 members of these animals, and conveyed 

 through tubes into a common cavity, which 

 I merely mention to show that he was ac- 

 quainted with that forrn of animal called 

 rhizostome or root-mouthed. 



As an evidence of an animal being little 

 else than a stomach, Mr. Hunter has exhi- 

 bited a specimen of the actinia associata. 

 The mouth, which is surrounded by tenta- 

 cula, leads into a cavity, like the finger of 

 a glove, the animal being no more than the 

 substance which forms the walls of this 

 cavity. Mr. Hunter, in his M.S. proceeds 

 to say, " that in some animals the stomach 

 has but one aperture, serving equally to 

 receive the food, and reject its residue. In 

 others a distinct aperture is allotted for each 

 of these functions. As the digestive organs 

 become complicated, we find the stomach 

 or digesting cavity has added to it an intes- 

 tinal tube, in which the food undergoes 



