570 BIOLOGY. 



FIRST CIRCLE. INTESTINAL, OOZOA MUCUS-ANIMALS. 



First Class. 

 Gastric, Vitelline Animals Infusoria. 



3462. The Infusoria admit of being reduced to three 

 divisions : the lowest of which, such as the Infusoria pro- 

 per or Monades, are provided for the most part with cilia ; 

 the next in succession, as the Rhizopoda, possess extensible 

 processes, and are mostly covered by a multi-chambered 

 shell ; lastly, the most perfect Infusoria have all kinds of 

 internal organs, and especially what has been called rota- 

 tory apparatus, as being the dawn of future tentacula. 



3463. These three Families obviously correspond to 

 the three classes of the present circle, and that indeed as 

 follows : 



To the first class, or Infusoria proper, correspond the 

 Monades. 



To the second class, or Polyps, the Rhizopoda. 

 To the third class, or Acalephse, the Eotifcra. 



3464. The Monades are obviously the simplest organ- 

 ized creatures, being mucous vesicles, which move, obtain 

 their food by stirring up vortical currents in the water, 

 and emit what is undigested again by the mouth. 



3465. They occur very abundantly in all infusions, 

 and can very well originate, like Fungi, by division of the 

 organic mass, although they are in a condition to propa- 

 gate themselves, i. e. by spontaneous division. 



3466. The Monades are the semen of the animal 

 kingdom, which is dissolved in, or rather produced from, 

 the sea. 



3467. The animal body is nothing else than a com- 

 pound fabric of Monads. 



3468. Decomposition is a separation into Monads, a 

 retrogression into the primary mass of the animal 

 kingdom. 



3469. All propagation, even that of the sex, com- 

 mences like the animal kingdom, or with its first family. 

 On that account the embryonic development must be a 

 passage through the animal kingdom. 



3470. The Rhizopoda usually adhere together within a 



