82 LABORATORY BACTERIOLOGY 



EXERCISE XXXVIII 



BACTERIUM (BACILLUS) SEPTIC^MI^ HEMORRHAGICiE 

 AND MICROCOCCUS LANCEOLATUS 



128. These organisms are the causes of swine plague or in- 

 fectious pneumonia in swine and of croupous or lobar pneu- 

 monia in man. ("y,^,-,^ ry^-vXjbu ^ ■) 



The name Bacillus septicmmice hemorrhagica was given by 

 Hiippe to the bacillus of swine plague (Smith). This- bacte- 

 rium (bacillus) is morphologically and in its cultural characters 

 not distinguishable from the bacterium (bacillus) of rabbit 

 septicaemia (Koch), of fowl cholera (Pasteur), and of Schweine- 

 seuche (Schiitz) . It is similar to a species of pathogenic bac- 

 teria found more or less frequently in the upper air passages 

 of nearly all of the domesticated animals. It is very similar 

 also to a pathogenic bacillus found in broncho pneumonia in 

 cattle and an infectious pneumonia in sheep. 



Micrococcus lanceolatus is the specific organism of lobar 

 pneumonia in man. It is found in the pneumonic lung tissue 

 and also in the saliva of a certain number of healthy people. 

 For the history and synonymy of this organism see article by 

 Professor Welch in the Johns Hopkins Hospital Bulletin, Vol. 

 III., p. 125. This organism resembles, in many of its properties, 

 very closely the bacterium of swine plague. In studying the 

 two species together there will be good opportunity of com- 

 paring them and detecting the differences and similarities 

 existing between them. 



References. — To swine plague. Smith, Report on Swine 

 Plague, Bureau of Animal Industry, U. S. Depart, of Agric, 1891. 

 Smith, Zeitschrift f. Hygiene, Bd. X. (1891), S. 480. Smith and 

 Moore, Bulletin No. 6. B. A. I., 1894. Moore, Report N. Y. State 

 Com. of Agric, 1897. 



