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SWINE IN AMERICA 



walls removed, and showing the embryo and manner in 

 which it is deported. At the right is the head of the 

 parasite, showing the rostellum or hooks with which it 

 attaches itself to the inner coat of the intestine; also, the 

 four sucker discs which serve the same purpose. And 

 below is shown one of the hooks very highly magnified. 



ADULT OF THE SWINE TAPEWORM 



Herewith are shown parts of the adult worm. The 

 left sketch shows head and neck of the worm as it de- 

 velops after finding a lodging place in the intestine; the 

 center shows segments still more developed but not yet 

 mature; while at tlie right we observe a fully developed 

 section. Let it be clearly understood that the tapeworm, 

 no matter what its species, does not live and grow by 

 sustenance obtained through the head, but by absorption 

 through its body walls. Each of the segments as shown 

 in the figure is complete in itself, containing male and 

 female sexual organs, and is capable of producing from 

 3000 to 6000 eggs. In the single mature section shown, 

 the genital pore is easily observed. This parasite can 



