B. I.] THE HISTORY OF ANIMALS. 7 



selves, and some inject it into others. The former are 

 called female, the latter male. In some animals there is 

 neither male nor female, and there is a diversity in the form 

 of the parts appropriated to this office. For some animals 

 have a uterus, others have only something analogous to the 

 uterus. These are the most essential organs ; some of 

 which exist in all animals, others in the majority only. 



CHAPTER III. 



1. THERE is only one sense, that of touch, which is common 

 to all animals ; so that no exact name can be given to the 

 part in which this sense resides, for in some animals it is 

 the same, in others only analogous. 



2. Every living creature is furnished with moisture, and 

 must die, if deprived of this moisture either in the course 

 of nature or by force. But in what part of the body this 

 moisture resides is another question. In some animals it is 

 found in the blood and veins, in others the situation is only 

 analogous, but these are imperfect, as fibres and serum. 1 The 

 sense of touch resides in the simple parts, as in the flesh and 

 in similar places, and generally in those parts which contain 

 blood, at least in those animals which have blood ; in others 

 it resides in the analogous parts, but in all animals in the 

 simple parts. 



3. The capacity of action resides in the compound parts, 

 as the preparation of food in the mouth, and the power of 

 locomotion in the feet or wings, or the analogous parts. 

 Again, some animals are sanguineous, as man, the horse, and 

 all perfect animals, whether apodous, bipeds, or quadrupeds ; 

 and some animals are without blood, as the bee and the 

 wasp, and such marine animals as the sepia and the carabus, 2 

 and all animals with more than four legs. 



CHAPTER IV. 



1. THERE are also viviparous, oviparous, and vermiparous 

 animals. The viviparous, are such as man, and the horse, the 

 seal, and others which have hair, and among marine animals 

 the cetacea, as the dolphin and those which are called selache.* 



1 Fibres and serum, as compared with veins and blood, refer to th 

 circulation in animals without red blood. 



2 Palinurus, Spiny Lobster. 3 Cartilaginous fishea. 



