02 APPENDIX TO THE 



§. LVl. Among the accessory worms, or those not 

 native to the human body, but which are sometimes 

 found in it, we may reckon as chief the Douve of the 

 intestines ffasciola intestinalisJ.[zS7) the ascarides 

 cf the stomach,(238) the ascaris of the nipple, the 

 biting or pricking ascaris,{?i39) the Crordius or Cri- 

 720,(210) the vena mediaensis, dracunculus, or Gui- 

 nea- worm,*(341) the exatiridion of Treuilery{2^2) 



* M. Larrey has had occasion several times to observe, in 

 Euvpt, iuilauimatory tumors, which are generally attributed 

 in Africa to the presence of a worm which had penetrated tKc 

 sSin, t!ie ulceration of wlilcli cannot be cured till the extrac- 

 tion of this pretended worm is completely effected. 



Accordingly the mode of curing this singular malady con- 

 sists in twistin;5 about ? small piece of wood a tender whit- 

 ish filament, which is regarded as the body of the worm. 



T!ie greatest precaution is always taken not to break this 

 thread or worm, for if unfortunately it should break, it is believ- 

 ed to produce such distressing symptoms, by penetrating deep- 

 er, as to require the amputation of the limb to save the life of 

 the patient. 



M. Larrey supposes (hat the morbid symptoms which attend 

 these tumors, which he considers as mere furuncles (biles) or 

 mild enthraccs, arise in fact from the operation of extracting 

 the Guinea-worm fdragoneauj, and that these symptoms are 

 aggravated when the operation fails. 



He has very attentively examined this whitish filament, but 

 did not find in it the smallest resemblance of a worm. 



He was convinced, by dissection, that this thread is dead 

 cellular substance, which they succeed to spin, as it were, 

 through a hole in tlie skin, when a small portion of it is taken 

 hold of and rolled round a piece of wood. M. Larrey believes 

 that it is by this ill-judged manoeuvre that certain cylindrical 

 portions of the cellular tissue are obtained, long enough to be 

 confounded with a real worm. 



