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 septiczemic 
or pyzemic 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, ¢.g., empyema. 
The tubercle bacillus gives rise to ‘‘cold abscesses,” 
usually in connection with bone. The suppuration 
which occurs in the walls of phthisical vomice 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. 
