A REMARKABLE CASE OF BILHARZIOSIS 



IS 



besides, the membrane is traversed by numerous engorged and dilated 

 capillaries, and thickly infiltrated with small round cells. Lying among 

 these abnormal Lieberkuhnian crypts there are ova, but not nearly in 

 such numbers as within the central parts of the tumours. I have found 

 no worms in these tumours (in the present case), but the worm itself has 

 appeared in many of the sections, lying in the sub-mucosa of the bowel, 

 but by no means so numerously as in some cases, and moreover those I 

 have, so far, seen are young males lying alone {i.e., not copulated), see 

 Fig. 8. 



Hitherto I have avoided any special description of the ova themselves, 

 because I wish to emphasise the fact that when bilharzia ova are found 



Fig. 8. —Portion of submucous tissue of large intestine (x loo). 



A. Male worm in a capillary. 



B. Ova. 



embedded in abnormal growths of connective tissue (or in fibro-epithelial 

 tumours) they (the ova) are no longer living, but are dead, and for the 

 most part disorganised. To begin with, the ova are hard bodies, and 

 therefore cause a certain amount of tearing of the enclosing tissue when 

 microtomic sections are prepared. Many of the ova in intestinal lesions 

 are, as is well known, possessed of a lateral spine, now in sections of such 

 tissues as this paper deals with, by far the greater number of the ova 

 present no visible spine whatever, and appear completely different from 

 normal ova such as are found in the urine. Moreover, the ova are often 

 distorted, cracked, broken or shrivelled as if they had undergone some 



(S3) 



