188 HITCHCOCK'S ANATOMY 



or 'Red." As the 

 food enters the Inglu- 

 vies, it is simply mixed 

 with the fluid secreted 

 by its coats, when it 

 passes into the Reticu- 

 lum, where it not only 

 receives additional se- 

 cretions, but is made 

 into little "cuds" or 

 " pellets," which, when 

 the animal is at rest, 

 are returned to the 

 mouth for the purpose 

 of re-chewing and mix- 

 ing with the saliva. 

 After this process is 

 completed, they are sent into the Omasum, which cavity 

 seems designed to prepare the food to enter the fourth stom- 

 ach where the true process of digestion takes place. And 

 it is from this fourth stomach or Abomasum, that the Rennet 

 is taken from young calves, and used by cheesemakers for the 

 purpose of coagulating the milk. 



342. Reason of this Complex Stomach. — The probable 

 reason of such a complicated stomach in these animals is that 

 since they have such poor means of self-defense, they need to 

 crop their food as quickly as possible, and then retire to a 

 safe place to masticate it. And it is also partly owing to the 

 fact that vegetable substances require a longer process for di- 

 gestion than does animal food. 



343. length of Intestine —The length of the Intestine 

 depends as a general rule upon the food used by the animal, 



Fig. 192. 



Stomach of the Ox. A. Paunch. B. Re- 

 ticulum. C. Omasum. D. Abomasum. 

 E. Pylorus. F. Duodenum. G. Esopha- 

 gus. 



Give the process of chewing the cud in these animals. 342. What is one important 

 reason for this complicated arrangement? 343. Upon what does the length of Intestine 

 depend? 



