280 BACTERIOLOGY. 



varius septicus; bacillus septicus sputigenus; diplo- 

 coccus lanceolatus capsulatus; micrococcus pneumoniae 

 crouposse. 



b. A form of septicaemia resulting from the invasion 

 of the tissues by an organism frequently seen in the 

 sputum of tuberculous subjects. It is characterized 

 by its tendency to divide into fours. It is the micro- 

 coccus tetragenus. 



c. Local or general tuberculosis. 



a. SPUTUM SEPTICiBMrA. 



If at the end of twenty-four to thirty-six hours the 

 animal be found dead, we may safely suspect that the 

 result was produced by the introduction into the tissues 

 of the organism of sputum septicsemia above mentioned, 

 viz., the micrococcus lanceolatus, which is not uncom- 

 monly found in the mouths of healthy individuals as 

 well as in other conditions. 



Inspection of the seat of inoculation usually reveals 

 a local reaction. " This may be of a serous, fibrinous, 

 hemorrhagic, necrotic, or purulent character. Fre- 

 quently we may find combinations of these conditions, 

 such as fibro-purulent, fibrino-serous, or sero-hemor- 

 rhagic."^ The most conspicuous naked-eye change 

 undergone by the internal organs will be enlargement 

 of the spleen. It is usually swollen, but may at times 

 be normal in appearance. It is sometimes hard, dark 

 red, and dry, or it may be soft and rich in blood. Fre- 

 quently there is a limited fibrinous exudation over por- 

 tions of the peritoneum. 



1 Welch: Johns Hopkins Hospital Bulletin, December, 1892, vol. ill. No. 27. 



