HALZOUN 



243 



Posterior ... 

 testis 



are overlooked from 

 their scanty size (0*2 to 

 0*3 mm.). 



As the liver fluke 

 feeds on blood it is 

 possible that it also 

 reaches, particularly 

 when young, the circu- 

 latory system, and cases 

 have been known in Vitettarium 

 which it has been carried 

 by the blood into organs 

 far from its original situ- 

 ation. Such cases also 

 have been repeatedly 

 observed in men. Pro- 

 bably the parasite de- 

 scribed by Treutler, 

 1793, as Hexathyridium 

 venarum, which pro- 

 truded from the rup- 

 tured anterior tibial vein 

 of a man, was a young 

 liver fluke. A few adult 

 specimens were found 

 by Duval in the portal 

 and other veins post 

 mortem at Ren nes( 1842) 

 in a man, aged 49, and 

 a similar statement is 

 reported by Vital from 

 Constantine (1874). 

 Giesker, in 1850, found 

 two hepatic flukes in a 

 swelling on the sole of 

 the foot of a woman. 

 Penn Harris states that 

 he observed six speci- 

 mens in Liverpool in a 

 spontaneously ruptured 

 abscess of the occiput 

 of a two months old 

 infant. Another case 

 which, like the previous 



s Anterior 



" 



Excretory pore- 



FlG. 145. Fasciola gigantica. 

 (After Looss.) 



x 6J.. 



