^ 





In some rLSpects lliis disease resembles manjie. It 

 is, however, prodiu-ed by au entirely ditterent parasite, 

 and on dose exan-ination il fan be seen iliat tlie condi- 

 tion of lilt' skin is different ('roiii tliat which exists in 

 niajiji;c. The parasite 



of favns is a vegetalile - ' '"~'N^ 



growth, known as Acho- 

 rion schorldnu. 



Favus nstially cuni- 

 mences abont ilu' comb, 

 head and neck. It causes 

 the feathers to become 

 brittle and break off and 

 fall out, and when tliese 

 are examined closely it 

 is seen iliat their intcMiei 

 is lilied with scales and 

 tvith branchint; threads 

 cesembling minute roots. 

 These are the lilauients 

 of the vegetable parasi 

 or fungus. When tl 

 eomb is involved, it becomes swollen, its surface be- 

 comes scaly, whitish and powderly. The eyelids are 

 frequently affected, and in some rare cases the featli- 

 ered surfaces are involved to such an extent that the 

 bird beeonies almost naked. Upon the skin there de- 

 velops a thick yellowish or grayish crust or scab in the 

 form of rather small, roundish disks, depi'essed at the 

 centre. Tlie odor of the diseased bird is peculiar and 





Read ; 



