This book contains information on up-to-date microchemical methods for the analysis of blood and spinal fluid. The essential contribution is the simplification of the laboratory procedures by decreasing the amount of material needed for analysis and by avoiding the use of expensive equipment. Such measures were fostered by wartime experiences with scarcity of materials and equipment; photometers and photoelectric colorimeters are only mentioned. The author has made a special point of giving detailed descriptions of all technical procedures and calculations. For this reason the book will serve as a valuable laboratory guide for workers inexperienced in microtechnics. Sufficient figures and tables are given to supplement the points made in the text. The bibliographies at the end of each chapter are most helpful.