96 



POULTRY DISEASES AND THEIR TREATMENT. 



Fig. 20. A section of a false membrane of a roupy fowl, (a) — false 

 membrane; (b), epithelium; (c), sub mucosa. (From Harrison and 

 Streit) . 



-^"^^ -V-^ <3^^''^ 





Fig. 21. Head of a bird with diptheritic roup afifecting the 

 mouth and tongue. A. B, C and D. — False membranes. 

 (From Megnin). 



"We may also point out that many poultry keepers who notice 

 the false membrane on the throat and mouth of their fowls, 



