- 44 BILHARZIA. 



80. Adults. Examine the demonstration specimen, showing pairs of adult worms in 

 the portal vein of man. Make a sketch of this. 



81. Adults. Examine and draw the prepared slide of the adult worm, showing : 

 two suckers ; oesophagus ; forked intestine uniting posteriorly ; and, in male, groove 

 for reception of female, testes ; in female, vitelline glands, ovary, uterus containing ova. 



82. Bilharziasis. Examine the demonstration specimen of the bladder of a man 

 infected with Bilharzia htematobium and the rectum of a man infected with B. mansoni. 

 Observe the changes in the tissues caused by the presence of the eggs. 



