CHAP. IV. 

 OF REPTILES. 



1. Of their Motion. 6. Water Lizards often change 



2. Of Serpents. their skins: 



3. Of their Brain, Sto- V. Re-production of parts 



mach, Generation, cut off. 



4. "V^nom. 6. Of Tape-worms. 



5.' Of seme particular 9. Of Worms that fed on 



sorts of Reptiles. stones. 



I. OT far removed from fishes are Reptiles, so 



named from their creeping, or advancing on the 

 belly. Many species of them have legs and feet, 

 but very small in proportion to the body. There 

 is a world of contrivance in their motion. The whole 

 body of the Earth. worm ? for instance, is a chain of 

 annular muscles, or rather one continued spiral mus. 

 clc, the orbicular films whereof being contracted, 

 make each ring narrower and longer, by which means 

 it is enabled, like the worm of an augre, to bore 

 its passage into the earth. Its creeping may be ex. 

 plained by a wire, wound on a cylinder. If this is 

 taken oft, and one end extended and held fast, it will 

 bring the other near it. So the worm having shot 

 cut its body, which is spiral, takes hold by its small 

 feet, and so brings on the hinder part. Ils feet 

 are placed in a four-fold row, the whole length of 

 the worm. With thrse as so many hooks, it fastens 

 to the earth, or whatever it creeps over, sometimes 

 this, sometimes that part of the body, and stretches 

 out, or, draws after it another. 



