Chap. 1 8.] - x Int (films. ' 21 1 



has been improperly called, nervous coat. This is 

 thick, firm, of a white colour, and is connected to the 

 mufcular by the intervention of cellular fubftancr, as it 

 is alfo to the coat within. 



The fourth and inner coat of the ftomach is the vil- 

 lous. This and the cellular coat, being more extenfive 

 than the reft, are formed into numerous wrinkles or 

 folds. It obtains the name ofvi/tous from the uneven- 

 nefs of its furface, as being fimilar to wool or hair 

 \vhen immerfed in water. It is fingle, of a red colour, 

 and -is copioufly fupplied with mucus. 



The ftomach is furnifhed with lacleals, which rife 

 moft numeroufly from it near its right orifice; jt is 

 aH~p very copioufly furnifhed with nerves and b'ood- 

 VelTels, which will be more fully defcribed hereafter. 

 With refpedl to the ufes of the ftomach, they will be 

 fpoken of at large in the chapter on digeftion. 



By the inteftines is meant the whole of the alimen- 

 tary tube beyond the ftomach. They are divided into 

 the finall and the large. The fmall inteftines are fub- 

 divided into the duodenum, the jejunum, and the 

 ileum. The large into the ccecum, the colon, and the 

 rectum. All the inteftines, except fome part of the 

 duodenum, are furrounded and fupported by the me- 

 fentery. In man, the length of the inteftines is about 

 fix times that of the body, but in graminivorous qua- 

 drupeds their length, in proportion to that of the body, 

 is much greater. 



'I he fmall inteftines fill the middle and fore-parts of 

 the abdomen while the large fill the upper and under 

 .parts, as well as the fides of that cavity. 



The. fmall inteftines, in general, are of a cylindrical 



form. They are compofed of four coats, the ftruefture" 



of which is fimilar, and which bear the fame names as 



thofe of the ftomach. The mufcular coat, however, 



P 2 differs 



