COLLECTION OF PUS. 139 



which occurs in boils, carbuncles, impetigo, folliculitis, 

 &c. They may cause abscesses in any part of the 

 body, and may also give rise to general infections, 

 ulcerative endocarditis, &c. 



Streptococci usually cause spreading inflammation of 

 the type of erysipelas or cellulitis. They are common 

 causes of osteo-myelitis and suppurative and septicaemic 

 or pyaemic processes connected with the puerperium. 



In general infections which are due to streptococci 

 the use of anti-streptococcic serum may offer the only 

 hope for the patient. 



The pneumococcus often produces suppuration in con- 

 nection with the respiratory system, especially empyema. 

 It also causes many cases of suppurative otitis media 

 and meningitis. 



The bacillus of typhoid fever sometimes causes abscesses 

 in connection with the bones after (sometimes long 

 after) typhoid fever. It has been found in other sup- 

 purative conditions, e.g., empyema. 



The tubercle bacillus gives rise to "cold abscesses," 

 usually in connection with bone. The suppuration 

 which occurs in the walls of phthisical vomicae are due 

 to other bacteria, chiefly streptococci and staphylococci. 



The bacillus of glanders only causes suppuration in the 

 specific lesions of the disease when these run an acute 

 course. 



The bacillus coli communis is the chief cause of sup- 

 puration occurring in connection with the abdominal 

 viscera, especially of peritonitis due to perforation of the 

 intestine and appendicitis. It frequently attacks the 

 urinary passages, causing cystitis, &c. 



The bacillus pyocyaneus causes blue pus, usually in 

 connection with the skin or subcutaneous tissues. 



The fungus of actinomycosis has been dealt with already. 



