PNEUMONIA. 



FIG. 50. 



109 



Diplococcus of pneumonia from blood, with surrounding capsule. (Park.) 



and therefore has no flagella. It grows on all culture-media, 

 very little at a temperature below 24 C., best at a tempera- 

 ture of 37 C. At a temperature above 42 C. all growth 



FIG. 51. 



Pneumococcus from bouillon culture, resembling streptococcus. (Park.) 



ceases. It is killed in a few minutes by exposure to a tem- 

 perature of 52 C. If grown at 42 C. for twenty- four hours, 



