[ 6I ] 



racers ; previous to which, he prefents us with 



the nalural divKion of animals, arifing from their 



different internal ftruBure ; an arrangement partly 



cftablillied by Ariftotk^ and of which our own 



great naturalift Mr, Ray has made confiderable 



ufe, in the introdudlory part of his Synopfts Ani- 



fnalium. By this divifion all the animal kmgdom 



naturally falls into fix clalTes, as follow : animals 



having the 



Heart furniflied with 



Two ventricles andf^^, , T\/r a n/nv/r a t ta^ 



. , j V iviparous. MAMMALIA, 



auricles: — ~\ . tjtot-ic 

 , A \ Oviparous. islKDb. 



Blood warm and red. L ^ 



One ventricle f ^^fpii"^tio^ 1 ^j^pj^Igj^* 



auricle: — — s voluntary. S 

 Blood cold and red. (.Breathing by Gills. FISHES. 

 One ventricle, with- r 



out auricle : — \ Antennated. INSECTS. 

 Sanies^ cold and co- 1 Tentaculated. VERMES. 



lourlefs. L 



He then gives the natural charaflers at large of 

 each clafs, taking in with the foregoing internal 

 ftrudure, all the differences arifing from the lungSy 

 or other organs of refpiration, as gills : from the 

 maxilUy jaws or mandibles : the organs of genera-' 

 tion : thofe of fenfation : the tegumentSy or outward 

 covering : and the fulcra^ or legs, wings, &c. 

 Our plan does not admit of introducing thefe at 

 large. 



At the head of each clafs is given a concife 

 and moft inftrudive defcription of the clajffical cha- 

 rader lb methodically conftruded, as to include 

 at the fame time an explanation of all the terms 



appertaining 



