Tumors of Bone.
—Brails ford25 pointed out that while the "barrier action" of the epiphyseal cartilage to bacteria and tumor cells is great, the breaking down of the barrier by a destructive lesion, as demonstrated by a roentgenogram, does not necessarily indicate that the lesion is malignant, as lesions of a tuberculous nature frequently act in this manner.
Radiosensitivity of Tumors.
—Stewart26 reviewed extensively the relative radiosensitivity of benign and malignant tumors. This article, replete with the experiences of the author, merits reading. The tumors were discussed according to their tissue origin.
Review of Ewing's Tumor.
—Lattman27 stated that Ewing's tumor should be diagnosed on the basis of the history of the clinical and roentgenologic findings and, above all, of the radiation therapeutic test. Biopsy was deprecated on the grounds that early metastases may follow. The tumor, which is most common in males under 30 years