9G 



ULTRY DISKASKS AND THEIR TREATMENT. 



POUL'l 



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

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

 Streit). 





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

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

 (From ]\Iegnin). 



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

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



