CHAPTER 9. 



Diseases Affecting the Skin. 



Chicken-pox— Favus — Mange or Depluming— Scaly Legs ^ 

 Lice, Mites, Etc.— Where do Lice Come From? 



CHICKEN-POX. 



CHICKEN-POX, sometimes called sore-head, af- 

 fects all domestic fowls. 

 Causes: This disease is supposed to be due to a 

 micro-organism and is therefore contagious. Filthy, 

 wet poultry-houses greatly favor its development. 

 . Symptoms: The disease affects the head mostly; 

 usually the eyes and about the beak, comb and wattles; 

 it is characterized by the formation of yellowish-gray, 

 warty-appearing nodules, from the size of a mustard 

 seed to that of a grain of corn. Sometimes, the eyes 

 are covered with nodules so as to cause blindness. 



The general health is usually not much affected at 

 first and in some cases the nodules will dry off and the" 

 fowl will recover rapidly, while in others they will 

 gradually grow worse and finally die. 



Treatment: Affected birds should be removed from 

 the flock and the necessary sanitary precautions taken. 



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