94 



THE VITAMINES 



apparent in 24 hours. The bird lies on one side, shows dyspnoea and 

 cyanosis and dies in a few hours. The second type is more chronic; 

 in these cases we see paralysis of the legs, but good general condition. 

 The appetite remains good, the loss in weight is insignificant; the 



FIG. 10. AVIAX BERIBERI 

 First day symptoms (Fraser-Stanton) 



crest remains red; in this condition, the chicken may live for weeks. 

 According to our personal experience, the second type is not so suit- 

 able for curative experiments. 



Segawa (267) also described two types of beriberi one form which 

 he regarded as a pure polyneuritis, and another, possessing more of 



