Smithsonian Report, 1955. — Schwartz 



''if^'^ . 



Plate 3 



'j^' 





.->->. *.'\ 



1. Photograph of microscopic preparation of muscle tissue containing encysted trichir 



Trichinella spiralis. 



2. Photograph of portion of hog liver showing two hydatid cysts, Echinococcus granulosus. 



