In the section on the quartz lamp, the authors discuss in detail the treatment of rickets, spasmophilia and tuberculosis in children, and refer to its use in some acute infections, such as asthma. They also refer to some of the dangers from its use, especially in the way of skin and respiratory complications. In the section on roentgen-ray therapy, the technic, quality of tubes and dosage is described; also the treatment of tuberculosis, its various localizations, the therapy of glands of internal secretion, the blood and blood-forming organs, eczema, bronchial asthma and hypertrophy of the lymphatic tissues of the pharyngeal ring. The book ends with a chapter on the dangers of roentgen-ray therapy. It is a practical and well considered monograph.