216 



ACUTE PNEUMONIA. 



Inoculation by inhalation appears only to have been per- 

 formed in the susceptible mouse and rabbit; here also 

 septicaemia resulted. 



The general conclusion to be drawn from these experi- 

 ments thus is that in highly susceptible animals virulent 

 pneumococci produce a general septicaemia; whereas in more 



FIG. 61. Capsulated pneumococci in blood taken from the heart of a 

 rabbit, dead after inoculation with pneumonic sputum. 



Dried film, fixed with corrosive sublimate. Stained with carbol-fuchsin 

 and partly decolorised. x 1000. 



immune species there is an acute local reaction at the point 

 of inoculation, and if the latter be in the lung, then there 

 may result pneumonia, which, of course, is merely a local 

 acute inflammation occurring in a special tissue, but identical 

 in essential pathology with an inflammatory reaction in any 

 other part of the body. When a dose of pneumococci 



