164 PATHOGENIC BACTERIA 



mitted directly from man to man, by particles of saliva or 

 sputum or in fecal discharges, or in pus, which should be dis- 

 infected as given for the colon bacillus. Besides the special 

 conditions to be mentioned later, members of this group have 

 been known to cause pyelitis, gastro-enteritis, peritonitis, 

 pleuritis, and septicemia. 



v % 



' FIG. 50. Bacillus mucosus capsulatus. (Hiss and Zinsser.) 



The most important member of the group is the Bacterium 

 pneumonias of Friedlander, a cause of pneumonia next to 

 the pneumococcus in importance for the acute lobar form. 

 The pneumonia is characterized by its sticky nature. It is 

 usually short in duration and grave in prognosis. The bacilli 

 may enter the circulation and give rise to localized inflam- 

 mations, including abscesses, elsewhere in the body. It has 

 been known to cause nasal sinus trouble, otitis media, endo- 



