PART II. 



CLASSIFICATION AND DESCRIPTION 



INFUSOEIAL ANIMALCULES. 



Class I. POLYGASTRICA. 



Note. — Where the creature has been described previously by Miiller, 

 the founder of this subject, the letter (M.) in parentheses follows the English 

 one. When the original name of Miiller is changed, such precedes the 

 letter (M.) within the parentheses. — The measurements are given in parts 

 of an inch. 



This class of animalcules is denominated Polygastric 

 from their possessing a digestive apparatus composed of 

 many globular vesicles, which perform the functions of 

 stomachs. They have no perceptible nervous cords or 

 pulsation. They are hermaphrodite, and increase by a 

 self- division of the creatures themselves, or by the growth 

 of gemmules, or little buds, upon their bodies. Hence 

 their external forms vary. Their locomotive organs con- 

 sist of processes (often vibratory), but they are destitute 

 of true articulated feet. 



