134 THE HISTORY OF CREATION. 



reasons previously given. Hence, if we here leave them out 

 of the question, we may accept two main classes or provinces 

 of real Protozoa, namely. Egg animals (Ovularia) and Germ 

 oMimals (Blastularia). To the former belong the three 

 classes of Archezoa, Gregarinse, and Infusoria, to ^the latter 

 the two classes of Planseads and Gastrseads. 



The first province of the Protozoa consists of the Egg 

 animals (Ovularia) ; we include among them all single- 

 celled animals, all animals whose body, in the fully 

 developed state, possesses the form-value of a simple 

 plastid (of a cytod or a cell), also those simple animal forms 

 whose body consists of an aggregation of several cells per- 

 fectly similar one to another. 



The Archaic animals (Archezoa) form the first class 

 in the series of Egg animals. It contains only the most 

 simple and most ancient primary forms of the animal 

 kingdom, whose former existence we have proved by means 

 of the fundamental law of biogenesis; they are, (1) Animal 

 Monera ; (2) Animal Amoebae ; (3) Animal Synamoebse. We 

 may, if we choose, include among them a portion of the 

 still living Monera and Amoebse, but another portion (ac- 

 cording to the discussion in Chapter XVI.) must on account 

 of their neutral nature be considered as Protista, and a third 

 portion, on account of their vegetable nature, must be con- 

 sidered as plants. 



A second class of the egg animals consists of the Grega- 

 rines (Gregarinse), which live as parasites in the intestines 

 and body-cavities of many animals. Some of these Grega- 

 rines are perfectly simple cells like the Amoebae ; some form 

 chains of two or three identical cells, one lying behind the 

 other. They differ from the naked AmcEbse by possessing 



