3l6 MANUAL or BACTERIOLOGY. 



formation of gas; all carbohydrates except saccharose fer- 

 mented with the formation of gas: all carbohydrates except sac- 

 charose fermented with the formation of gas. He would call 

 the first group Bacterium aerogenes; the second, Bacterium 

 pneumonicum, the third, Bacterium acidi lactici. 



Under Bacterium aerogenes he would include Bacterium 

 aerogenes already so called, B. capsulatus septicus, and several 

 cultures with various names obtained from different sources: 

 Several from Johns Hopkins University labeled "B. pneum. 

 Friedlander," B. hemorrhagic septicemia Howard, B. mucosus 

 Blumer, B. mucosus capsulatus Wright and Mallory, besides 

 others. 



Under Bacterium pneumonicum Friedlander, B. capsulatus 

 Fashing, B. sputiginus crassus, B. ozena, and probably B. 

 rhino scleromcz, and other of the Johns Hopkins cultures. 



Under Bacterium acidi lactici he would include the organism 

 going by this name. 



Infections due to this organism are very prevalent in Perkins 

 locality (Cleveland, O.), and are caused almost exclusively by 

 members of the Bad. aerogenes division. 



Bacillus of Rhinoscleroma.* — A short bacillus with rounded ends, often 

 united in pairs, also growing to a greater length; surrounded by a capsule; not 

 motile; stained by the ordinary aniline dyes. It is much like the bacillus of 

 Fiiedlander, but some writers state that it retains Gram's stain more tena- 

 ciously than that organism; this may be doubted, however. The organism 

 has been cultivated. It is a facultative anaerobe. It grows rapidly, best in 

 the incubator. It does not liquefy gelatine; its growth in gelatin stick-cultures, 

 resembles that of the bacillus of Friedlander. It grows on the ordinal y media. 

 Gas may be developed upon potato. 



It is pathogenic for mice and guinea-pigs, less so for rabbits. Its virulence 

 is less than that of Friedlander's bacillus. 



It has been obtained from the tissues of cases of rhinoscleroma. Rhino- 

 scleroma is a disease characterized by a chronic tubercular thickening and 

 swelling of the skin around the nose and similar swelling of the nasal mucous 



♦Perkins comes to the conclusion from his investigations that this organism 

 has no etiological connection with the disease in question, but that it is rather 

 a secondary invader. Journ. Inf. Dis. Vol. IV., No. i. p. 65. 



