47 



wherever they grow. Sometimes thev spread out over 

 the lining membrane of the air tubes and cause a 

 diffuse inflammation and thickening that somewhat 

 resembles the change that takes place in diphtheria. 

 In the lungs, the growths are characterized by the ap- 

 pearance of little round nodules, where the tissue dies 

 and becomes yellowish and of the consistency of 

 cheese. In old cases, these spots sometimes become 

 loaded with lime salts and then they are ha id and even 

 stony. Tlie principal symptom is difficult breathing. 

 The respiratory movements are rapid and accompanied 

 by a hoarse sound. The appetite is diminished, the 

 spirits are depressed, the bird is disinclined to move, 

 its feathers become ruffled, it loses flesh rather rapidly 

 and towards the end develops a diarrhoea that hastens 

 it to its fatal termination. The entire course of the 

 disease is rallier long and usualh' covers several weeks. 



Tr'eatment in these cases is not to be recommended 

 because the outlook for recovery is poor. However, if 

 anything is done the best results can be obtained by 

 causing the bird to inhale the vapor of iodine. This 

 plan of treatment is carried out b}' mixing equal parts 

 of tincture of iodine and hot water. The steam as it 

 rises can ies the iodine vapor and by holding the vessel 

 beneath the bird's head it is obliged to inhale this 

 medicine. Iodide of potash may be administered in- 

 ternally in doses of one to two grains twice daily. 



It is far better, however, to prevent the disease than 

 to allow it to develop and then attempt to cure it. 

 When it is remembered that moulds occur principally 

 in damp, dark places, it will be seen that good drain- 

 age, ventilation ai>d light will prevent their growth 

 and thus ward off the disease. Disinfection and white- 

 washing are also of the highest value in this direction. 



