104 



rhea or constipation, colicky pains; a temporary edema around eyes 

 about the eighth day; muscular pains begin. 



Period of digression : This begins about the eighth to the fifteenth 

 day, sometimes later; young embryos are wandering to and attacking 

 the muscles, hence muscular symptoms (myositis) develop; painful 

 tension of muscles, especially biceps; members assume semiflexed 



Fig . 40. 



Fig. 39. 



Fig. 44. 



Fig. 42. 



FiG8. 39-42.— Later stages of same; the muscular structure is undergoing changes. (After Leuciiart, 

 1866a, pi. 2, figs. 3, 6, 7, 8.) 



Figs. 43-45.— Muscle triohinae, 0.3 mm., 0.4 mm., and 0.6 mm. long. (Alter Leuckart, 1866a, pi. 2, 

 figs. 10-12.) 



position; movements, chewing, swallowing, breathing, and speech 

 become difficult; eyes become fixed; fever. 



Period of regression: The parasites become encysted in muscles. 

 All symptoms may increase, then gradually decrease ; cachexia and 

 anemia resulting from malnutrition; pruritis, miliary cutaneous 

 eruptions; desquamation; about twenty-fourth day, a "second" 



