ZOOLOGY. 505 



3113. As being of a sentient, mucous nature, they 

 are point-substance or nervous mass. The tentacula 

 are higher organized stamina, and thus occur as cilia, 

 surrounding the oral aperture or mouth, as in the Infu- 

 soria. These palpi or feelers are, from being organs of 

 ingestion, both male penes as well as digits or tongues, 

 as in the Polyps. Their structure is still wholly tubular, 

 while their elongation appears to be for the most part 

 effected by injection with water they are absorbents, 

 as in the Acalephae. The Oozoon brings forth young in 

 the same cavity, in which it digests and by which it 

 respires, and impregnates itself with the same filaments, 

 whereby it seizes, swallows, and tastes its food. 



In the bottom of the cavity of the Germ-animals, gra- 

 nules develop, which are born or escape through the 

 floral opening pharynx, and again become similar 

 beings. In others the granules also sprout forth at- 

 tached to the walls of the cavity, remain there some time 

 united with the parent animal, and thus completely re- 

 present the mode of propagation in plants by means of 

 gemmules or buds. Among the Polyps and Acalephse it 

 is well known that the ova issue from apertures near the 

 mouth ; while in the Actiniae this is stated to take place 

 from the stomach. The ovaria are, as is well known, 

 situated between the stomach and parietes of the body. 



3114. The intestinal animals are an entire animal 

 organism, but only in the chaotic condition. They are 

 the fundamental tissue, the cellular system of the animal, 

 and the higher animals are only separated cells. 



3115. The propagation is in every respect similar to 

 that of plants. Now, as the seeds are the whole plant 

 upon a small scale, so is the granule or ovum the entire 

 animal; it is liberated through the pharynx and con- 

 tinues to grow merely by increasing in size. But if the 

 young animal protrude through the tegument, that is a 

 true gemmiparous propagation. 



3116. Those Oozoa, which like plants can develop 

 buds, consist of several animals, and may be cut in pieces 

 like plants ; when each piece becomes again an entire 

 animal. 



