liis(oi-_Y of (luc ol' llic- coimiKiii laiH'Wdrms nf iii;iii 

 {Tcenia soleum) usually called I he "puik lajiew iniu." 

 The eggs from the mature tapeworm of this sjjecies 

 pass from the body of a person harboring it and some 

 of them are consumed by swiuo. They hatch out in 

 the stomach or intestines of the swine, penetrate the 

 intestinal walls and reach the muscular portion of the 

 animal. There, thev constitue tlie so-called "bladder 

 worm" or "measles" of pork. 

 The hog is slaughtered and if 

 its flesh is eaten raw or iiiiper- 

 fectly cooked, the consume) ^ 

 swallows the living parasites g 

 which develop in the intestinal 5 

 canal into mature tape^^orms. o 



In the same iAa\ il is neces- >■ 

 sary for the tapeworms of fowls o 

 to pass through the body of an =■ 

 intermediate host bcfVu-e iheyf 

 can re-appear as tapeA\ orms in | 

 fowls. It has been shown In 5 

 definite experiments and nunu-r- 5 

 ous observations that the inter© 

 mediate hosts in some cases are "^ 

 small animals such as snails, ° 

 molluscs, worms and- insects S 

 and it seems probable that these |1 

 animals are the intermediated 

 hosts for bird tapeworms in all ^ 

 cases. s 



A single tni)ewoi'm in llie iu 

 testinal canal of a f o.« I ma\ do 

 no harm. But when they are 

 numerous symptoms of disease appear. 



of tlU' 



