This is another of the many guides prepared for the hospital intern in conducting his work. It begins with an outline for the taking of an ordinary history, and follows with the special history required for neurologic examination. The succeeding sections provide the technics for the laboratory tests associated with body fluids and for functional tests related to various organs. There are also directions for paracentesis, intravenous therapy, skin tests, blood grouping and similar topics, a table of normals in blood chemistry, and of abbreviations useful in recording observations. A section entitled "Therapeutic Measures" records briefly some specimen diets, and other tabulations provide material for estimation of calories and other factors associated with food. The material is practical and well suited to the purpose for which it was prepared.