PARTS OF ANIMALS, III. xiv. 



the pig. The pig's stomach is larger than the dog's, 

 and it has some folds of medium size, so as to prolong 

 the time of concoction. The dog's is small in size — 

 not much bigger indeed than the gut, and its inner 

 surface is smooth. The gut has its place next after 

 the stomach in all animals. Like the stomach, this 

 part too presents many various forms. In some 

 animals it is simple and similar throughout its 

 length, when uncoiled ; in others it is not similar 

 throughout. Thus, in some it is wider near the 

 stomach, and narrower towards the end (that is why- 

 dogs find difficulty in discharging their excrement) ; 

 in the majority, however, it is narrower at the tojj, 

 and wider at the end. 



In the horned animals, the intestines are longer and 

 have many convolutions ; and their bulk (as well as 

 the bulk of the stomach) is greater, owing to the size 

 of the animal : horned animals being, on the whole, 

 large in size because of the ample treatment which 

 their food receives. Except in those animals where 

 it is straight the intestine gets wider as it proceeds, 

 and they have what is called the colon and the 

 blind and swollen part of the gut '^ ; and then after 

 that point it gets narrower again and convoluted. 

 After this, it goes on in a straight line to the place 

 where the residue is discharged ; and in some this 

 part (which is called the anus) is supplied Λvith fat, in 

 others it is devoid of fat. All these parts have been 

 devised by Nature to suit their appropriate functions 

 in treating the food and in dealing with the residue 

 produced. As the residue proceeds on its way and goes 

 downwards, it finds a wider space where it remains 

 in order to undergo transformation ; this is what 



" The caecal dilatation. 



297 



