94 POULTRY DISUASES AND TTII'IR TRK A TM l-.N T. 



l>iiic(l with the formation ui the tumor on the lace, there is an 

 affection of tlie eyes; or the eyes become (Hseased without the 

 preliminary (Hscharge from the nose, in which case poultry keep- 

 ers speak of fowls as suffering from "roup of the eyes." 



"Roup of the liycs. The first symptom of the eyes is gener- 

 ally an inflammation of the eye-lids. These become red, swollen 

 and hot; then the mucous membrane and glands of eyes become 

 inflamed and begin to secrete a liquid — at first clear, and then of 

 a grey, slimy, putrid character, which dries on the feathers at the 

 side of the head, causing them to stick together or fall out. If 

 the secretion is retained in the eye socket, it undergoes a change, 

 becoming a yellowish, solid, cheesy mass of the same appearance 

 as that found in the nasal tumor. This cheesy mass either 

 forces the eye out of its socket, or the inflammation entirely 

 destroys it. These cheese-like masses form in one or two 

 days, and may reappear after many daily removals." 



"All these affections, described above, may be localized on 

 one side; but often both nasal passages anrl both eyes are affected 

 at the same time." 



■"Combined w^ith the symptoms of roup above described, there 

 often are patches of a greyish yellow exudation firmly adherent 

 tc the mouth, throat, etc. These patches are called "false mem- 

 branes," and on account of their somewhat close resemblance to 

 the membrane which is formed in human diphtheria, it has 

 been thought by some writers that the avian and human dis- 

 eases are the same. Here, however, let it suf^ce to say that the 

 weight of evidence is against this contention." 



