Polycythemia Vera

Since 1903, when Sir William Osler published a study of polycythemia vera, some attention has been given to the disease, and many cases have been reported. But, since, in spite of several theories, its causes remain to be discovered, and all details of case histories must be considered of value in the study of its etiology, I venture to add these two, which came under my own observation. REPORT OF CASES Case 1.—History. —M. S., a woman, aged 32, married, a housewife; has one child, living. She had had mumps, chickenpox and whooping cough in childhood, chorea from 10 to 13 years of age, and was then anemic and thin. Menstruation was regular and normal. She had married at 24. The patient had had tonsillitis every winter from childhood until the tonsils were removed, at the age of 26. At 28 she was in a hospital six weeks for