Measles is a well-defined disease, intensely infectious, occurring but once in a lifetime. It is very rarely fatal, nearly all the deaths credited to it being really due to bronchitis and inflammation of the lungs, the results of neglect and exposure to cold. No age is exempt. The only reason why it is looked on as a disease of childhood is that being in the highest degree infectious from the beginning, when its nature is not suspected, few children in the schools can hope to escape it, but if by chance they do, they are just as susceptible to it in afterlife. Whooping-cough is a highly infectious disease, occurring but once in a lifetime, but at any age, though most frequently in childhood. The frequent belief that children suffering from whooping-cough should be as much as possible in the open air is an entirely mistaken one, as it leads not only to continuing the disease longer, but to danger of bronchitis and pneumonia. As in diphtheria and scarlet fever the mucus is the chief vehicle of contagion, and pocket handkerchiefs should be forbidden, pieces of soft rag being substituted and burned as soon as used. Typhoid or enteric fever is slow and uncertain in its onset, a full month in duration, and the return of health is usually tedious. It is like diphtheria, directly a result of unsanitary conditions. Danger of direct infection from the patient is slight, but the poison remains in the evacuations from the bowels and is propagated by them. By this means a reservoir or river has been known to infect a whole town. Broken or defective drains, the entrance of sewer gas into houses, wells polluted by cesspool drainage, and milk diluted with infected water, are among the principal means of spreading the disease. It is an absolute rule that all bedding which becomes soiled should be destroyed, and the refuse of the sick room should be instantly disinfected and removed from the dwelling. CARE OF THE SICK ROOM