14 COMPENDIUM OF THE VETERINARY ART. 



whereas two hundred times that quantity would 

 produce no sensible effect upon the horse. At 

 the cardiac orifice, or that part where tlie oeso- 

 phagus enters the stomach, its internal coat is 

 so loose as to be thrown into folds, appearing as 

 if it were designed as a valve to prevent the 

 regurgitation of the contents of the stomach ; 

 from this cause, as well as from the insensi- 

 bility of the membrane, with which great part 

 of the stomach is lined, u horse very rarely 

 vomits ; but the opinion that he is totally inca- 

 pable of that action, is certainly not true, as I 

 have once seen a horse vomit considerabl3\ 

 This vomiting came on spontaneously, and 

 soon ceased. There is no medicine we are 

 acquainted with capable of producing this ac- 

 tion in the horse's stomach-, and its occurrence 

 is very rare, this being the only case I ever 

 saw : but I have been informed of two similar 

 cases. 



When we examine the throat, another 

 valvular structure may be observed, (which is 

 peculiarly large in the horse) formed by the 

 epiglottis or valve of the windpipe, and a mem- 

 branous substance that hangs from the back 

 part of the roof of the mouth : this is termed 

 "velum pendulum palati. These bodies form 



