As the title-page indicates, this handy little book completes with this year its half century of usefulness. It is in convenient, pocket form, and neatly but substantially bound. It contains: calendar, metric system, table for converting apothecaries weights and measures into grams, dosage table, notes on asphyxia and apnea, comparison of thermometers, and obstetric table. The blank leaves are for visiting list, memoranda, addresses of patients and nurses, accounts asked for, wants, engagements, record of births and deaths, cash accounts, etc.