GONORRHCEA. 107 



secondary abscesses. The pus produced by it is thick, and 

 creamy white in color. 



Pathogenesis. It frequently causes suppuration in the 

 serous membranes pleura, peritoneum, pericardium, and 

 lungs. It has also on some occasions caused suppuration 

 in the viscera and in the subcutaneous and deep cellular 

 tissue. 



XIII. Bacillus Coli Communis. 

 XIV. Bacillus Typhosus. 



XV. Bacillus Tuberculosis. 



These three organisms are sometimes found associated with 

 pus-formation, and have been thought to be occasionally the 

 chief suppurative agents. The discussion of this subject, 

 however, will be properly taken up under the head of the 

 description of these bacilli. 



QUESTIONS. 



What are the pyococci? 



Describe the Staphylococcus pyogenes aureus. How does it act on bouillon, 

 on gelatin, on agar? 



Where is this organism found in the human body ? Where outside of the 

 human body? 



What is the effect on animals of intravenous injections of this organism? 

 What of subcutaneous inoculation ? 



In what respect does the Staphylococcus pyogenes albus differ from the 

 aureus? The Staphylococcus pyogenes citreusf 



Describe the streptococcus pyogenes. Where is it found? Of how many 

 elements are its chains formed? What is the effect of intravenous, intni- 

 peritoneal, and subcutaneous inoculations? 



Where were the MicrococcMS cereus albus and flavus found, and by whom? 



What are the characteristics of the Micrococcus tetragenns f 



What is the gonococcus? Where is it found ? How is it recognized under 

 the microscope ? 



What media are best suited for its growth? How is it differentiated from 

 other pus cocci ? 



What other bacteria cause suppuration or are found in pure cultures in 

 abscesses. 



