WORMS. 



X nI EARLY all the animals of this, the lowest class 

 of animal being, have but slow locomotive powers. 

 Their bodies are soft, fleshy, and destitute of arti- 

 culated members : some of them have hard internal 

 parts, and others have crustaceous coverings. Many 

 of them have arterial and veinous vessels, in which 

 the blood undergoes a real circulation ; but these 

 are by no means common to the whole class. In 

 some of them eyes and ears are very perceptible, 

 while others seem to enjoy only the senses of taste 

 and touch, which are never wanting. Many have 

 no distinct head, and most of them are without feet. 

 The whole of these creatures are very tenacious of 

 life. In most of them parts that have been de- 

 stroyed will afterward be reproduced. 



They are divided into five orders: 



i. Intestinal PFcrms*. These are simple naked 

 animals, without limbs, that live some of them 

 within other animals, some in water, and a few in 



* Intestina, Mollusca, Testacea, Zoophyta, and Infusoria of 

 Linnaeus. 



LI 4 



