10 THE COMMON COLICS OF THE HORSE 



in a case where vomiting has occurred during Hfe, we 

 find the parts flaccid and easily dilatable ; the fingers 

 may be introduced with freedom into the cardia, the 

 lining membrane of the oesophagus is no longer in 

 apposition, and on dividing the gullet for the purpose of 

 removing the stomach, no matter how far forward it 

 is cut, the fluid contents of the viscus (that is, if this 

 organ be entire) will pour out. In a case of epilepsy 

 which occurred in my practice, I found after death, 

 although there had been no vomiting during life, the 



Fig. 2. — Longitudinal Section of Stomach and Pylorus. 



a, Opening of cardia ; b, pylorus ; c, commencement of 



duodenum ; d, pyloric or duodenal ' trap.' 



cardia and oesophagus in this condition. The cardiac 

 and pyloric orifice of the stomach are not far apart ; the 

 pyloric is below the cardiac. A very singular and 

 important arrangement of the pylorus and duodenum 

 exists ; dissection reveals that the duodenum, where it 

 commences at the pylorus, is S-shaped and much dilated, 

 forming an arrangement not at all unlike an S-trap used 

 in drain-pipes (see Figs. 2 and 3). This direction of the 

 duodenum appears to regulate the pace at which the 

 ingesta should pass through ; as soon as the trap is 

 formed, the duodenum ascends towards the spine lying 



