/OOLOGY. 567 



3440. An integument clothed with hair, and sell- 

 substantially inoveable is the perfection of this organ, it 

 is 9, fur Furred animals. 



3447. The fur is the peripheric combination of the 

 Vegetable and Animal. The hairs are the highest Vege- 

 table, as being the vascular system grown out of or above 

 the animal, and constituting the fundamental or basi- 

 system of the whole body. The tegumental muscles are 

 the lowest Animal. In the fur consequently the whole 

 animal has been represented, but as a limit set between 

 animal and world. 



3448. The tegumental covering also varies. The 

 hairs become scanty in respect of number ; instead of 

 them spines, horny rings or scales occur, yet there are 

 always hairs on the belly. In many Whales they seem 

 to dwindle into bristles. In some they have coalesced to 

 form a kind of bark, as in the Stellerian Walrus or Sea- 

 cow. 



Thorax. 



3449. In all the respiration is aerial ; in ah 1 there is a 

 true costal structure, and a respiration effected through 

 the motion of the ribs or a pumping action ; in all the 

 lungs are filled with cells ; in all there is a diaphragm, 

 a larynx, a trachea with cartilaginous rings, and a thyroid 

 gland. But the air no longer penetrates from out the 

 lungs into ah 1 the cavities of the body, as in Birds. 



Abdomen. 



3450. The two intestines, namely, the large and 

 small, are more distinct from each other than in other 

 animals ; the caecum coli is in most distinct ; the stomach 

 expanded and membranous in texture, so that it operates 

 simply through chemical influence. Liver, pancreas, and 

 spleen occur in all. 



3451. The sexual parts are in every respect very per- 

 fect. The penis is present in all, and all have an uterus, 

 fallopian tubes, and separate oviducts. The penis is in 



