352 BACTERIOLOGY 



4. Mycobact. Elmassiani 



Bacille analogue au Bacille de Pfeiffer Elmassian : Annales Pasteur Inst., 

 XIII, 1899, 625. 



Morphology. Bacilli in size like Bact. conjunctivitis, but a little thicker, and 

 with a slight constriction in the middle ; ends tapered or rounded, others 

 distinctly rod-like ? others like Bact. pneumonia. Not stained by Gram's 

 method. In a medium containing two parts of gelatin and one of blood 

 serum in slanted tubes inoculated with washed sputum from a case of 

 whooping-cough, and incubated at 37, round transparent punctiform 

 colonies, 0.25-0.5 mrn. in diameter, developed. No growth in ordinary 

 bouillon or on gelatin. In serum bouillon in 48 hours, at 37 C., a uni- 

 form turbidity, becoming clear. 



Pathogenesis. Intravenous inoculation of large doses into pigeons and guinea 

 pigs, negative. Intraperitoneal inoculations of 2-4 cc. into guinea pigs 

 cause death in 24 hours. Abdomen soft, painful ; animal immobile ; ele- 

 vation of temperature, peritonitis, and a serp-fibrinous exudate. 



Habitat. Isolated from sputum in whooping-cough, tuberculosis, pneumonia, 

 and la grippe. 



5. Mycobact. rhusiopathiae (Kitt) 



Bacillus des Schweinerotlaufs Loffler : Arbeiten Kaiserl. Gesundheitsamte, Bd. I, 



1886, 46. 



B. rhusiopathia-suis Kitt : Bakterienkunde u. path. Mikroskopie, 1893, 284. 

 Bact. erysipelatus-suis Migula : Die Natiirlichen Pflanzenfam., 1895. 



Morphology. Bacilli very small, slender, bent or curved, also filaments, 



0.2:0.6-1.8 /A. 

 Gelatin colonies. Thin, veily, which under the microscope show a fine 



filamentous structure. 

 Gelatin stab. In depth, gray cloudy radiating outgrowths ; after some time 



the gelatin is softened. 

 Agar slant. A delicate layer. 

 Bouillon. Turbid ; later a gray white sediment. 

 Potato. No growth. Indol negative. 

 Pathogenesis. Inoculations of mice, white rats, and pigeons cause death in 



3-4 days with septicaemia; bacilli in the blood and enclosed within 



leucocytes. Mice die in a sitting posture with the eyes sealed by a 



secretion. 

 Habitat. Associated with swine erysipelas, Schweinerotlauf. 



