AMPHIBIA. 55 



FIG. II. 



(THE SAME.) 



WHEN the third trunk of the fifth has entered the jaw, it is seen distributing 

 brandies on a membrane investing a cartilage situated within the lower jaw, and then 

 giving off filaments to the parts beneath the horny covering : and sending two large 

 branches to a portion of muscle analogous to the mylo-hyoideal, which is connected 

 with and forms the most anterior part of the constrictor muscle of the throat, and 

 resembles the cutaneous muscle in man it is seen sending a branch also to the 

 membrane of the mouth. 



It is probable that the connexion of the nerves with the membrane, and the 

 position of this on the cartilage within the jaw, produce a peculiar and necessary 

 degree of feeling, and at the same time prevent shocks which would otherwise be 

 experienced in the forcible adaptation of the hard and horny jaws. 



FIG. III. 



(THE SAME.) 



THIS figure represents the branches of the splanchnic nerves in their passage, with 

 the branches of the mesenteric artery on the mesentery towards the intestines. 



