The outstanding features of this book are the comparative cytological and histological findings, the concise and instructive text, and the numerous and generally excellent photomicrographs. It is the sincere feeling of this reviewer that no cytopathologist and no cytology laboratory, as well as no cytologically interested clinician, should be without this book. The publishers should be congratulated for the excellent composition and illustrations (black-and-white as well as colored photographs). Translations into other languages should be seriously considered in the near future. The authors have given us a needed and lasting addition to our cytological literature with this important book.