INDEX OF INFECTIOUS DISEASES. 679 
Lupus. Due to infection by the tubercle bacillus, 276. 
Lymphangitis. Usually due to streptococcus pyogenes ; occa- 
sionally other organisms—viz., staphylococcus pyogenes aureus and 
albus and the colon bacillus, either alone or associated—take part in 
the production of this affection. 
Malaria. Due to infection by the plasmodium malariz, 626. 
Malignant (Edema. Due to infection by bacillus cedematis 
maligni. 
Malignant Pustule. Due to anthrax bacillus. 
Mastitis. The micro-organisms commonly found in mastitis are 
the ordinary pus cocci—staphylococcus and streptococcus. Diplo- 
cocci corresponding to the gonococcus have also been observed in 
patients suffering at the same time from gonorrhea. 
Measles. All attempts to discover the etiology of measles, as of 
the other specific eruptive febrile diseases except, perhaps, smallpox, 
have thus far been futile. ; 
' Meningitis. (See Cerebro-spinal meningitis. ) 
Nephritis. The urine in acute infectious diseases, and also in cases 
of chronic nephritis, not infrequently contains various micro-organ- 
isms, which are also found in the blood or some other of the organs. 
Among the micro-organisms commonly found in nephritis second- 
ary to general infection are: Streptococcus, staphylococcus, pneu- 
mococeus, bacillus coli communis, bacillus typhi abdominalis, etc. 
Ophthalmia. There can be little doubt that most acute and some 
chronic inflammations of the eye are due to the presence of micro- 
organisms. As is well known, the gonococcus of Neisser is the 
cause of gonorrheeal ophthalmia, and, according to Fuchs, a consid- 
erable number of cases of so-called Egyptian ophthalmia are probably 
due to the same infective agent, while other cases are perhaps caused 
by the bacillus of Koch and Kartulis or by a combination of these 
two micro-organisms. Many bacteria when introduced into the eye 
give rise to inflammatory processes. The pneumococcus has been 
found by several investigators in cases of panophthalmia and other 
metastatic eye affections, sometimes alone or associated with the 
streptococcus and staphylococcus pyogenes The bacillus pyocy- 
aneus and bacillus coli communis have also been met with in these 
affections, the inflammation being undoubtedly due to the presence 
of the micro-organisms in the eye, which has been previously injured 
in some way. 5 
Osteomyelitis and Periostitis. According to most.authors the 
staphylococcus, 469, pyogenes aureus is considered to be the specific 
