24 



PARASITES OF MAN 



principally to the reproductive apparatus. What else I have 

 observed is for the most part confirmatory of the statements 

 made by Mr Busk. In particular, his brief account of the 

 position and character of the digestive organs was not only 

 confirmed by my earlier examinations, but is now re-verified. 



In the representation 

 given in my ' Intro- 

 duction ' I showed in 

 dotted outline two 

 large organs which I 

 supposed to be the 

 testes. I distinctly ob- 

 served radiating lines 

 proceeding from the 

 centre in each ; but 

 I could not discover 

 the slightest trace of 

 any limiting border to 

 either organ. I now 

 found in the same 

 position two nearly 

 circular flattened 

 masses with clearly 

 defined limits (i y k). 

 No doubt could be 

 entertained as to the 

 testicular character of 

 the lower organ (k). 

 In the original draw- 

 ing I further indi- 

 cated the presence of 

 a third and much 

 smaller globular mass. 



Fi z .3. The large human nuke (Jhstoma crassiim). a, Oral sucker ; m 



b, intestine; c t csecal end of same; d, reproductive papilla; which I termed the 

 e, uterine rosette (the folds of which are not branched) ; / one of 



the folds (in profile) ; g, vitellarium ; A, hernial protrusion (the Ovary I but what 

 result of an injury to the specimen); i, upper testis-, j, streaks -, 



or layers of seminal fluid which have escaped by rupture Supposed to represent 

 and assumed a branched appearance , *, lower testis uninjured 



(but slightly altered in outline from flattening) ; J, ventral sucker. thlS Organ in the 

 Magnified 2 diameters. Original. 



particular specimen 



from which the accompanying illustration was drawn turns out 

 to be merely a hernial protrusion resulting from injury (h). 

 The radiating, broad, and branching seminal ducts are beauti- 

 fully distinct in one of my specimens, forming the most attrac- 



