20 DISEASES OF THE NASAL PASSAGES 



Medical.— Spray the nasal passages with a warm boric 

 acid (2 per cent.) or sodium bicarbonate (2 per cent.) solution. 

 Remove the dry discharge from the edge of the nasal openings. 

 Apply vaselin or zinc oxid ointment to those parts as protec- 

 tive agents. 



EMPYEMA OF THE INFRAORBITAL FOSS^l OF BIRDS. 



Definition.— A collection of pus in the infraorbital fossae 

 which causes a distention of one or both of them. 



Etiology.— This condition usually occurs during the course 

 of infectious nasal catarrh, diphtheria or parasites (monos- 

 toma). The mucous membrane becomes infected and the 

 purulent material collects in the fossae greatly distending 

 them. 



Symptoms.— A warm painful swelling is noticed in the infra- 

 orbital region, which may affect one or both sides. The 

 enlargement, which is quite firm, protrudes over and closes 

 the eye. 



Prognosis.— Depends upon the primary cause. When the 

 affection is confined to the fossae the prognosis is favorable. 



Treatment.— Surgical.— An incision should be made over 

 the enlargement and the accumulated material which is 

 quite hard and firm removed with a curette. The cavity 

 should be washed with antiseptics. 



INFECTIOUS NASAL CATARRH OF RABBITS. 



Rabbit Plague. Rabbit Influenza. Rabbit Distemper. 



Definition.— An infectious disease involving the mucous 

 membrane of the nasal passages, which later produces general 

 infection. 



Etiology.— The exciting cause is a small, slender, immobile 

 bacillus, similar in size to the bacillus of cholera in birds. It 

 does not form spores and is Gram-negative. This organism 

 is also pathogenic to guinea-pigs and mice, but rabbits are 

 most susceptible. Infection takes place by inhalation during 

 cohabitation with affected animals, or by being taken in with 



