85 



disagreeable and resembles that of a mouldy or musty 

 grain bin. It becomes tliin, weak, exhausted, and uu 

 less relieved it dies. 



If a small poi-tion of a crust or the contents of a 

 feather growing on the diseased skin is mioistened with 

 a weak solution of acetic acid and placed under the 

 microscope it will be seen tliat it is made up of cells 



Thk Achorion Scho)ilein of the Favds of Poultry. 

 Bight hundred times natural size; tv, empty tubes; tp, tubes containing 

 protoplasm and spores; s, isolated spores. 



from the skiu among ^^bich thread-like branching fila- 

 ments penetrate in all directions. There are also nii 

 merous little round bodies which are the spo-res or 

 seeds of the parasitic plants. Favus is contagio-us 

 and spreads from one animal to another. It is more 

 apt to affect animals that are in poor health and weak 

 than those which ;ue hearty and strong. It is also 

 more apl to star-t at a ])oint where the skiu is broken 

 than where it is intact. Tliere are numerous observa 



