AN OUTBREAK OF RABBIT SEPTICAEMIA. 
297 
A more detailed description of the lesions that were found 
in the different rabbits is appended. 
Rabbit No. 26.—In a fairly good condition. The nasal 
cavities contained considerable muco-pus. Mucosa thickened, 
pale. The mucosa of the larynx and upper trachea hyperae- 
mic. In the dependent portion of the cephalic lobe of the 
right lung a small area of hepatization. Bronchioles in hepa- 
tized portions filled with muco-pus. The secretions from the 
nasal cavities, tracheal mucosa and bronchioles contained rab¬ 
bit septicaemia bacteria, as indicated by stained cover-glass 
preparations. 
Rabbit No. 28.—Female, pregnant. The nasal cavities 
contained very much muco-purulent substance. Mucosa 
thickened, deeply reddened. Lungs normal, heart muscle pale, 
liver fatty, bouillon tubes inoculated from the blood and liver 
remained clear. One inoculated from the nasal discharge 
developed an impure culture of rabbit septicaemia bacteria, 
which were isolated by means of agar plate cultures. 
Rabbit No. 39.—In good condition, considerable abdominal 
fat. The abdominal and thoracic organs appeared to be 
normal. The mucosa of the nasal cavities thickened, opaque, 
and covered with a muco-purulent substance. Stained cover- 
glass preparations from the nasal secretions exhibited very few 
bacteria, but in those made from scrapings of the mucosa 
showed many polar stained, rabbit septicaemia bacteria. A 
tube of bouillion inoculated with the.scrapings from the base 
of the mucosa developed apparently a pure culture of the 
bacillus of rabbit septicaemia. A rabbit inoculated intraven¬ 
ously with 0.75 cc., died in about thirty-six hours. Innumera¬ 
ble polar stained bacteria were present in cover-glass prepar¬ 
ations from the liver, spleen and blood. Pure cultures were 
obtained from the blood and spleen. 
Rabbit No. 27.—Was somewhat emaciated. The nasal cavi¬ 
ties were empty. Mucosa not appreciably affected. Tracheal 
mucosa deeply reddened, due to the injection of blood vessels. 
The left lung and heart were normal. The right lung collapsed 
and encased in a thick layer of grayish, partially organized 
cellular exudate. Liver hyperasmic. Spleen slightly en- 
