SPECIES DESCRIBED BY VARIOUS WRITERS. 2C5 



larvae, produced the disease known as " foul-brood. " 

 Adult bees fed on material containing bacilli became 

 affected ; inoculation of mice and rabbits with the 

 bacillus gave doubtful results. The bacilli were 

 isolated from the diseased larvae of bees. 



Bacillus of swine fever (Bacillus des Ery- 

 sipelas malignum. Rothlauf. Bacillus of pneurno- 

 enteritis of the pig, Klein.*) Rods 2 3 p, long, 

 actively motile ; capable of spore-formation. They 

 can be cultivated in broth and hydrocele- fluid, 

 and carried on through successive generations. 

 A drop of any of these cultivations produces the 

 disease in pigs, mice, and rabbits ; and they die with 

 a characteristic swelling of the spleen, coagulative 

 necrosis of tracts of the liver tissue, and inflam- 

 mation of the lungs ; pigs inoculated with artificial 

 cultures are protected against a fatal attack. 



The bacillus was observed in the diseased organs 

 of pigs that had died of swine fever, and of animals 

 that had died from the inoculated disease. 



Quite recently f fresh investigations of swine 

 fever have been published; in some a figure-of-eight 

 micro-organism apparently corresponding with the 

 micrococcus of swine fever was isolated. In others 

 an extremely minute bacillus, bearing a close 

 resemblance to the bacillus of septiccemia of mice. 

 In nutrient gelatine the latter develops as a cloudy 



* Klein, Report to Med. Ojfic. Loc. Govt. Board, 18771878. 

 f Loffler und Schiitz, Arbeiten aus dem Kaiser lichen Gesund- 

 heitsamte, vol. i., 1885. 



