VERMINOUS DISEASES. 153 



adults and robust constitutions ; hence these worms 

 prevail more in the former than in the latter, be- 

 cause in the first, circumstances favour their growth 

 and reproduction. Infants and enfeebled persons 

 being already irritable, it follows that the ascarides 

 verraiculares must produce in these individuals 

 more serious inconveniences than in adults and firm 

 subjects. 



§ XCII. The symptoms darived from these 

 worms are extremely violent in the inflammation of 

 the intestines, principally in the colon and rectum. 

 Though these worms exist here in small quantity, 

 the effects of their presence are very severe. The 

 dificiency of the mucous secretion, and the increase 

 of heat are so many predominant causes of the 

 phlogistic diathesis, which renders tliese inflamed 

 parts more susceptible of morbid irritation. 



§ XCIII. Frequently these worms, situated in 

 the wrinkles of the end of the rectum, are the cause 

 of tenesmus, hemorrhoides, and of swelling and in- 

 flammation of the anus. 



Those portions of the intestinal canal which 

 are supplied with nerves from the branches of the 

 intercostal nerve being irritated by worms, the ef- 

 fects which hence result and which have often been 

 observed, are convulsive cough, grinding of the 

 teeth, itching of the nose, and various other vermi- 

 nous affections, from sympathy. 

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