BACTERIA IN CROUPOUS PNEUMONIA. 401 



Thirteen cases were examined microscopically, by cultures, and 

 by inoculations into susceptible animals ; six cases by microscopical 

 examination and experiments on animals; and the remainder only by 

 microscopical examination. Four of the cases were complicated 

 with purulent otitis, six with pneumonia, three with ulcerative endo- 

 carditis. The " pneumococcus " was found in sixteen of the twenty- 

 five cases ; in four Streptococcus pyogenes was present ; in two 

 Diplococcus intracellularis meningitidis of Weichselbaum ; in one 

 Friedlander's bacillus ; in one Newmann and Schaffer's motile ba- 

 cillus ; in one a small curved bacillus. 



In forty-five cases collected from the literature of the subject by 



FIG. 90. FIG. 91. FIG. 98. 



FIG. 90. Micrococcus pneumonise crouposae from blood of rabbit inoculated with normal human 

 saliva (Dr. S.). X 1,000. 



FIG. 91. Micrococcus pneumonias crouposae from blood of rabbit inoculated subcutaneously 

 with fresh pneumonic sputum from a patient in the seventh day of the disease. X 1,000. 



FIG. 92. Surface culture of Micrococcus pneumonias crouposse, on nutrient agar, showing the 

 development of long chains. X 1,000. 1 



better this micrococcus was present in twenty-seven, Streptococcus 

 pyogenes in six, and the Diplococcus intracellularis meningitidis of 

 Weichselbaum in ten. 



Monti (1889), in four cases of cerebro-spinal meningitis, demon- 

 strated the presence of the same micrococcus. In three of his cases 

 pneumonia was also present. In two Staphylococcus pyogenes aureus 

 was associated with the " diplococcus pneumonia." 



Micrococcus Pneumonias Crouposce in Ulcerative Endocar- 

 ditis. Weichselbaum, in a series of twenty-nine cases examined 

 (1888), found " diplococcus pneumonise" in seven. 



Micrococcus Pneumonice Crouposce in Acute Abscesses. In a 

 case of parotitis occurring as a complication of croupous pneumonia 

 this micrococcus was obtained from the pus in pure cultures by Testi 

 (1889); and in another case in which, as a complication of pneumonia, 

 there developed a purulent pleuritis, abscess of the parotid on both 

 sides, and multiple subcutaneous abscesses, the pus from all of the 

 sources named contained the ' ' diplococcus " in great numbers, as 

 shown not only by microscopical examination but by inoculation into 

 rabbits. 



1 The above figures are from Dr. Sternberg's paper published in the American 

 Journal of the Medical Sciences for July and October, 1885. 

 26 



