MANUAL FOR STABLE SERGEANTS. 25 



left portion. The left, or cuticular, portion has a hard, yellowish 

 white surface which is continuous with the lining of the esophagus. 

 The right, villous, or true digestive portion is reddish in color, vas- 

 cular, and contains the peptic glands which secrete the gastric juice. 



FiG. 12. — Digestive apparatus. 1, mouth; 2, pharynx; 3, esophagus; 4, diaphragm; 

 5, liver; 6, stomach (left sac); 8, liver, upper extremity; 9, large colon; 10, caecum; 

 11, small intestines; 12, floating colon; 13, rectum, 14, anus; 15, left kidney and its 

 ureter; 16, bladder; 17, urethra. 



"^^e caj^acity of the horse's stomach (from 3 to 4 gallons) is small in 

 )portion to the size of the animal. 



32. The small intestine extends from the stomach to the large 

 itestine. It is about 70 feet long and from one to two inches in 

 diameter. 



