162 POULTRY DISEASES 



Ssmiptoms. — The hen may be found dead on the 

 nest. The symptoms are of short duration: the 

 attack comes on suddenly, as the hemorrhage soon 

 presses on the brain structures so that the func- 

 tion of that part stops and the animal is seen to 

 stagger, fall, and die immediately. 



Postmortem Findings.— Upon opening the brain 

 cavity and examining the brain, there will be 

 found hemorrhages (clots) in the brain substance. 



