Digestion. 1 J 1 



duodenum ceases, or becomes so slowed down that only 

 small quantities of material pass out, and so slowly will 

 this occur that it will be many hours before the stomach 

 is really empty, though had the process continued as it 

 commenced, it would not have contained anything at the 

 end of an hour. 



This condition of stomach digestion in the horse may be 

 variously modified depending on the nature of the food, 

 the quantity given, the form in which it is given, the order 

 in which one food follows another, and whether water be 



Fig. 7.— Longitudinal Section of the Stomach of the Hoi:se. 



CARD., cardia ; PYL., pylorus ; L.s., left sac ; R.P.. right sac ; cut., cuti- 

 cular coat ; vil., villous coat ; isou., boundary line between the 

 cuticular and villous portions ; fund., fundus of the stomach : the 

 dotted area indicates the position of the secretion of gastric juice. 



given before or after feeding. All these are points which 

 require our attention, but before giving it we must briefly 

 look at the stomach itself. 



The mean capacity of a horse's stomach is, according to 

 Colin, from 25 to 30 pints, or from -5 to -63 of a cubic foot. 

 These figures are obtained from a very large number of 

 observations, and give the extreme size of the organ when 

 distended. The viscus is under the best conditions for 



