COOK PORK WELL. 



32' 



the end of the first week after pigs have swallowed trich- 

 inae, is denoted by loss of appetite, vomiting, colic, diar- 

 rhea, dullness, arching of the back, and an inclination 

 to lie down and hide in the litter. These symptoms, ex- 

 cept the diarrhea, usually disappear in from six to eight 

 days. 



Fig. 159. Pork Flesh Worm (Trichina Spiralis), imbedded in the flesh. 



Fig. 160. The immature worm, highly magnified. 



When the trichina? are numerous, the membranous pas- 

 sage of a great number of them induce in some pigs a 

 fatal inflammation of the peritoneum ; in others a form 

 of inflammation of the intestines, with ejection of false 

 membrane. 



Trichinons pork, if used at all, must be well cooked. 

 Great heat is necessary to kill all the worms. The only 

 safe plan is to cook all pork meat thoroughly. 



