110 THE DOG IN HEALTH. 



dition, as compared with one not thus burdened with 

 flesh. 



The argument from the wild carnivora must not be 

 pushed too far, since their mode of life is very different 



Fig, 3.— Stomach op the Dog. 



A, CEsophagus ; B, Pylorus. 



In the Dog and Cat the ventriculus is but little curved, and is pear-shaped, the 

 small extremity corresponding to the pylorus. The cardia is dilated like a 

 funnel, and is nearer the left extremity of the organ than in other animals. 

 The oesophageal mucous membrane is not continued beyond the margin of that 

 orifice. The simple stomach of the carnivora forms only a single sac, whose in- 

 ternal mucous membrane presents, throughout its whole extent, the same or- 

 ganization as the membrane lining the right sac of solipeds. This membrane 

 is remarkable for the regular and undulated folds it forms when the stomach 

 is empty. Nothing is more variable than the capacity of the dog's stomach, 

 because of the great differences in the size of this animal, according to breed. 

 M. Colin has found the minimum to be 1^ pints, and the maximum to be 1^ 

 gallons ; he calculates the average to be about '2)4 quarts. In the cat, the 

 average is from 2 to 2X gills. (Cut and description from Chaveau.) 



from that of the dog at the present time. More reliable 

 instruction may be got from a study of ourselves. 



