140 



POULTRY DISEASES 



Symptoms. — The appetite may be somewhat dim- 

 inished. The bird sneezes, throws its head and 

 may expel some mucns. The discharge at first is 

 watery and later becomes more or less thick 

 (mnco-piirnlent). The eyes may show more or 

 less inflammation (conjnnctivitis) and the eyelids 



Fig. 45. Obstruction of the Trachea 



A, Showing depression (drooping wings, inability to stand, etc.) from 



partial asphyxiation. B, same chicken shown in "A," just before death. 



may become adherent. The characteristic offens- 

 ive order of roup is absent. 



Treatment. — The same treatment as outlined un- 

 der roup (see page 153) has given us uniformly 

 good results. 



The following report of one of the experiments 

 by Mr. Coulton, under the direction of the author, 



