This volume is a text-atlas designed for haematologists, pathologists and laboratory staff in training and in practice. The first edition was published by Times Mirror, and sold 3000 copies. This edition is changed substantially in that the chapters on technical aspects which originally introduced the book are now integrated into consistent sections to cover what the disease is, what films to obtain, which counts to do, differential diagnosis, and which further tests should now be performed. In integrating and shortening the technical material and eliminating simpler material covering normal ranges and typical blood counts, the author brings a stronger clinical emphasis to the book, gives a 20% increase in the text, with 5-10% more pictures.