DISEASES FROM MICRO-ORGANISMS. 127 
the room, and should pass directly out of the house 
after visiting the patient. The nurse, too, should wear 
a gown over the uniform and a cap over the hair, both 
being removed when it is necessary to go to other 
parts of the house. During the period of desquama¬ 
tion skin should be kept anointed with plain or car- 
bolized vaseliri, as preferred, in order to keep the par¬ 
ticles of skin from spreading about. Quarantine may 
be raised when the desquamation has completely ceased. 
Before the patient is discharged a full bath in weak 
bichloride of mercury solution, i : 10,000, should be 
given, taking particular care to cleanse the hair. The 
room and contents should be disinfected after the 
manner already described. 
Immunity is conferred by one attack. Some suc¬ 
cess in the treatment of the disease has resulted in the 
transfusion of blood from patients recently recovered. 
Measles. 
Measles is a contagious and infectious disease 
that generally occurs during childhood, although adults 
may contract it. It spreads with great rapidity and 
generally in epidemics. The specific agent of infection 
is probably inhaled, causing the first symptoms to ap¬ 
pear in the nose and throat. 
The infectious material is undoubtedly in the se¬ 
cretions of the nose and throat of the sick patients. It 
may be spread by the attendants on the patient, by 
furniture, hanging, carpets, by flies and insects. In 
preventing the spreading of the disease special atten- 
