228 INFECTIVE DISEASES. 



SEPTICAEMIA IN RABBITS. 



Koch minutely investigated a disease of rabbits produced 

 by inoculation with impure river water and with putrid meat 

 infusion. Bacteria are found in the blood in abundance, and may 

 be readily cultivated. 



The smallest quantity inoculated subcutaneously or in the cornea 

 of a rabbit produces a rise of tempera- 

 ture and laboured breathing after ten 

 to twelve hours, and death in sixteen 

 to twenty hours. The spleen and 

 lymphatic glands are found to be 



FIG. 107. -BACTERIUM OF RABBIT en i ar g ed , an d the lungs congested, 

 SEPTICAEMIA; BLOOD OF SPAR- ' 



ROW x 700 (Kocn). but there are no extravasations, and no 



peritonitis. Mice and birds are very 

 susceptible ; guinea-pigs and white rats have an immunity. 



DAVAINE'S SEPTICAEMIA. 



A disease was produced by Davaiiie by injecting rabbits with 

 putrid blood. Rabbits, mice, fowls, pigeons, and sparrows are sus- 

 ceptible, and guinea-pigs and rats are insusceptible to the bacteria 

 found in this disease. Rabbits inoculated with a trace of blood con- 

 taining the bacteria, or with a culture, died in from twenty-four to 

 thirty-six hours. The spleen, liver, lungs, and intestines are highly 

 congested, and sometimes extravasations and peritonitis are found. 



FOWL CHOLERA. 



Fowl cholera is an epidemic disease of the poultry-yard much 

 dreaded in France, and well known through the researches of 

 Perroncito, Toussaint, Pasteur, and Kitt. 



FIG. 109. BACTERIUM OF FOWL 



I'JS 8< If Tr. F F WL CHOLERA ' CHOLERA, x 2500. Muscle juice 



x 1200. From blood of inoculated Fowl. of -p owl 



Fowls suffering from the disease usually die in from twenty-four 

 to forty-eight hours. The disease shows itself by the fowls becoming 



