The Central Nervous System and Behavior

of its complexities may seem so formidable as to discourage the uninitiated. Even for relatively experienced people in this field, it is not always easy to be fully informed on the current state of the art. The present volume should therefore be widely welcome. It constitutes the Proceedings of a Conference on Liquid Scintillation Counting held at Northwestern University in August 1957. As such it is an extremely welledited and organized volume. All major aspects of the field are covered in a manner that is generally concise and understandable and by no means superficial. The individual articles are on a high level of scientific and literary competence. Though short, they provide good introductions and coverage to the various topics. Adequate references to further literature are provided. The arrangement is such that, even though no index is included, the volume is easy to use as a general source book.