EXAMINATION OF THE DIGESTIVE APPARATUS. 



31 



The mouth is held open as described on page 28; the head is 

 extended, and, having the sound well lubricated with oil, it is 

 introduced along the upper wall of the throat, keeping it high 

 up, so as to avoid the larynx. The animal will attempt to swal- 

 low it, but that will assist the passage of the sound. It will glide 

 along easily until the obstruction is reached. (For further details, 

 see Foreign Bodies in the CEsophagus.) 



Examination of the Stomach. 



Baum has made a thorough examination of the position of the 

 dog's slomaeh. When the stomach is filled with food, the form 

 of which can be easily recognized (Fig. 6), it lays in the left side 



Fig. 6. 



Section through the centre of the abdomen. 



of the abdominal cavity, the inferior portion resting on the liver, 

 and the anterior portion against the diaphragm, the left surface 

 going toward the abdominal wall, but between that and the wall 

 lies the left wing of the liver. This left lobe extends as far as 

 the pelvis, coming close to the anterior edge of the left kidney ; 

 the larger part of the stomach is inclosed by the liver and the 

 diaphragm coming in contact with the anterior side. The cardiac 

 end of the stomach is directed toward the median line and the 

 pyloric toward the right. 



