Fig. 198. DEVELOPMENT OF TRICHUROIDEA 



of victim uf trichiniasis. F-J—CripinniU, cohtmbne (F— Anteiior end of 

 unhatched first stage larva; G— Late first stage larva from intestine of 

 pigeon 7 days after infection; H— Embryo or unhatched first stage 

 larva; I— Second stage larva; J— Third stage larva_ in _molt._ A-E, after 

 Chandler. 1940. introduction to Parasitology. 



A-C — Stages in calcification of TrichineUa (A — Ends calcified; B — 

 Thin layer of calcareous material over whole cyst; worm beginning to 

 degenerate. C — Complete calcification). D — Larvae of TrichineUa spv- 

 rails encysted in striped muscle fibers in pork. Camera lucida draw- 

 ing of cysts in infected sausage. E — Larvae of trichina worms burrow- „ „ ,^ , a, , n i, r 

 ing in huniar, fiesh before encystment, from preparation from diaphragm U.S.U.A. tech hsull. b 



F-J. after Wehr, 1939, 



294 



