T.XXV.9. lo. ix. 12. STOMACH AND INTESTINES. 335 



ceafes from another caufe alfo, which is the ex- 

 hauftion of the fenforial power of the part, and theft? 

 two caufes frequently operate together. 



9. At the times of thefe inverted efforts of the 

 ftomach not only the lymphatics, which open their 

 mouths into the ftomach, but thofe of the fkin alfo, 

 are for a time inverted ; for fweats are fornetimes 

 pufhed put during the efforts of vomiting without 

 an increafe of heat. 



10. But if by a greater ftimulus the motions of 

 the ftomach are inverted ftill more violently or 

 more permanently, the duodenum has its periftaltic 

 motions inverted at the fame time by their affocia- 

 t'ion with thofe of the ftomach ; and the bile and 

 pancreatic juice, which it contains, are by the in- 

 verted motions brought up into the ftomach, and 

 diicharged along with its contents; while a greater 

 quantity of bile and pancreatic juice is poured into 

 this inteftine; as the glands, that fecrete them, are 

 by the^r affociation with the motions of the inteftine 

 excited into ftronger action than ufual. 



1 1 . The other inteftines are by affociation ex- 

 cited into more powerful action, while the lympha- 

 tics, that open their mouths into them, fuffer an 

 inverfion of their motions correfponding with the 

 lymphatics of the ftomach, and duodenum ; whicli 

 with a part of the abundant fecretion of bile is 

 carried downwards, and contributes both to ftimu- 

 late the bowels, and to increafe the quantity of the 

 evacuations. This inverfion of the motion of the 

 lymphatics appears from the quantity of chyle, 

 which comes away by (tools; which is otherwife 

 abforbed as foon as produced, and by the immenfe 

 quantity of thin fluid, which is evacuated along 

 with it. 



12. But if the ftimulus, which inverts the fto- 

 mach, be ftill more powerful, or more permanent, 

 it fornetimes happens, that the motions of the biliary 



glands, 



