FELIS LEO. 39 



The six fore -teeth in the lower jaw of the lion, although they make 

 a pretty regular line at their base, yet they make a zigzag one at the 

 fangs, which increases to the points. The necessity of this arises from 

 the want of room at this part of the jaw, between the two tusks, for 

 the points of the six teeth to make an even line. The lion, according 

 to the teeth, is at the head of the carnivorous animals. 



The aspera arteria is much longer in the lion than in the dog, in 

 proportion to the size of the animals, and the two edges formed by the 

 ends [of the tracheal rings] overlap one another, but the intermediate 

 ligament is so elastic as to allow of a considerable distance between 

 these two edges, which enlarges the trachea considerably. It is reason- 

 able to suppose that this can be but of little service in common respira- 

 tion, as the trachea is at all times large enough to allow a free passage 

 for the air, which is proved by its being larger than the glottis. 



The lung of the right side is divided into three, besides the lobe 

 passing behind the vena cava. The left lung is divided into two lobes, 

 and the uppermost is partially subdivided into two. The lower lobe is 

 fixed by its lower and inner edge to the posterior mediastinum by a thin 

 and pretty round membrane. On the right of the oesophagus, before 

 the heart, there is a cavity which is made up of the posterior medias- 

 tinum on the left side, in which the oesophagus passes, and on the right 

 side it is made by the attachment of the lower lobe of the right lung to 

 the particular lobe [that behind the vena cava], and to the spine upon 

 the right side, and by the attachment of the particular lobe to the 

 mediastinum by a broad membrane, all of which make a pouch. The 

 trachea is large in proportion to the animal, so are the bronchise and 

 the pulmonary cells. 



The pericardium is not thick, but very dense and strong. The heart 

 is very much fasciculated, like the human. The arteries are very strong, 

 not having the appearance of those of a bullock. There are two pul- 

 monary veins from the left, and one from the right lung : in the dog 

 there are three from the left lung and two from the right. 



The oesophagus becomes very large just before it passes through the 

 diaphragm 1 . The stomach has a strong band of muscular fibres running 

 along its great curve, something like one of the ligaments [or longitudinal 

 bands] of the human colon, but not so distinct. 



The stomach is bent towards its small end ; for at first sight it seems 

 to be as much in the right as in the left [half of the abdomen] ; but 

 then the small end is bent upon itself, so that the pylorus is in the 



1 [See the Hunt. Preps. Nos. 64 and 451, and the additional preparation No. 451 A, 

 with its description (Physiol. Catal. 4to. vol. i. p. 124), for a demonstration of the 

 peculiarities of the lion's gullet.] 



