—Woman; aged 59; had never had a severe illness of any kind; family history good excepting that mother died of carcinoma of breast.
—Somnolence: About May, 1911, it was observed by her family that frequently, while seated in a chair and conversing with those about her, she went to sleep. When aroused she resumed her conversation and carried it on in her usual manner, often going to sleep again. Throughout the course of the disease drowsiness of varying degree and irregular sleep was noticeable.
—Front view of cerebellum. The tumor is to the left of the center of the illustration.
Some time during May, 1911, headaches of conciderable severity appeared in the occipital region and extended to the top of the head in a diminished degree. These headaches were a prominent feature of the case until the end. During the months of September and