526 BACTERIA IX INFECTIOUS DISEASES NOT PROVED 



OZJENA. 



The researches of Thost, Klamann, Hajek, and others show that 

 Friedlander's bacillus is present in the nasal secretions in a consider- 

 able proportion of the cases of ozsena, but its etiological relation to 

 the morbid condition which gives rise to the offensive discharge has 

 not been established. 



Thost found this bacillus in twelve out of seventeen cases studied 

 by him, and frequently almost in a pure culture ; but he also found 

 it in rhinitis from syphilitic ulceration, from polypus, and in simple 

 coryza. 



Hajek found Friedlander's bacillus in seven out of ten cases 

 studied by him, but it was associated with various other species of 

 bacteria, and especially with the pyogenic micrococci and with Ba- 

 cillus fluorescens liquefaciens. He also obtained almost constantly 

 his Bacillus fcetidus ozyenoe (No. Ill), which appears to have been 

 the cause of the foetid odor of the nasal discharge. 



Marano (1890) in ten cases of ozsena found a capsule bacillus in 

 the nasal secretions which closely resembles Friedlander's bacillus, 

 but which he believes not to be identical with it. 



PAROTITIS. 



No demonstration of a specific microorganism in mumps has been 

 made, but in non-specific, suppurative parotitis one or other of the 

 pyogenic micrococci appears to be the cause of the inflammation and 

 pus formation. In parotitis occurring as a complication of pneu- 

 monia Micrococcus pneumonise crouposse has been found as the only 

 microorganism in pus from the inflamed gland (Testi, Duplay). 



PEMPHIGUS. 



Demme (1886) has cultivated a diplococcus from a case of acute 

 pemphigus which possibly is related to this disease (see Micrococcus 

 of Demme, No. 27, page 319). The same coccus was found by Dahn- 

 hardt in a similar case. 



PERITONITIS. 



That peritonitis usually results from the presence of micro- 

 organisms in the cavity of the abdomen seems to be pretty well 

 established by experimental evidence and by bacteriological re- 

 searches in cases of this disease. Mechanical irritants, like finely 

 powdered glass (writer's experiments), introduced into the cavity of 

 the abdomen of rabbits, do not cause peritonitis unless microorgan- 

 isms are introduced at the same time ; the minute fragments of 

 glass become encysted and the animal remains in good health. But 

 Pernice has shown that peritonitis may be induced in rabbits and in 



