Composing a book about a single symptom involves three procedures: (1) collecting the facts and theories, (2) evaluating them, and (3) presenting them.
Dr. Ryan is an otolaryngologist at the St. Louis University School of Medicine and formerly a Fellow at the Mayo Clinic. He has had considerable experience in the investigation and treatment of headache; he has done original work, especially in the assay of new drugs; he has read extensively. Nearly every detail about this large subject seems to be contained in this volume; the discussions on treatment are particularly full; the chapter summaries are clear and helpful, the references, excellent. A cavil is that Jonathan Hutchinson is said to have described temporal arteritis in 1890, forty-four years before Horton's valuable work. The author has thrown his net widely, and some of the objects brought up seem hardly worthy of examination. In this age of experts, the student