OF FOREIGN ANIMATED BODIES. 535 



other analogous productions, inflammation, hypertrophy, se- 

 rous, sanguineous, and purulent infiltrations, &c.; which con- 

 stitutes the compound cancers of the stomach, of the mam- 

 moc, &c. 



SECTION IV. 



OP FOREIGN ANIMATED BODIES. 



845. The animals* which are met with in the organiza- 

 tion, and which live at its expense, are, on the one hand intes- 

 tinal worms, and on the other animals attached to the surface 

 of the body, penetrating into its substance, introduced into its 

 cavities, &c. The knowledge of these beings is one of the 

 parts of medical natural history the most difficult and most 

 obscure from the want of exact observations. 



ARTICLE I. 

 OF INTESTINAL WORMS. 



846. Intestinal worms or entozoary,t entozoa (Rudolphi,) 

 are formed, or at least are born and inhabit within the organi- 

 zation; they can not live elsewhere. They are found not only 

 in the alimentary canal and ducts which are inserted in it, 

 but even in the cellular tissue, in the muscles and in the sub- 

 stance of organs which are the most distant from the surfaces 

 of the body, as the brain. Their organization presents many 

 and great varieties (38). Their origin is very obscure. Con- 

 fining ourselves to the indication of those which inhabit the 

 human body, they maybe referred to three orders, viz.: vesi- 

 cular worms, flat worms and cylindrical worms. 



* J. H. loerdens, Em 

 etc., 1801-1802. 



1810. Idem, Ento: Berolini, . 



