This represents an ambitious effort by one of the leading hematologists of France to cover the presently available methods of study relating to the morphology of the blood cells and bone marrow in a single book. In a volume of 622 pages, many of which are occupied by 404 figures and the bibliography, a prime need to insure the best possible success would seem to be the conservation of space. The reviewer feels that more essential text might have been included by omitting the discussion on collecting and preparing specimens of blood for routine examination and by omitting the discussion of the physiology and pathology of blood cells. All of this type of material has been well recorded many times and is easily available in other publications.
Additionally, and unfortunately, the volume is replete with uncritical and sometimes unacceptable statements, examples of which begin on page 4: "Only very rarely