Paralleling an increase in the numbers of recognized subspecialists in pediatrics and the emergence of the subspecialty boards, there have appeared numerous monographs and textbooks devoted to these specific disciplines. One entry in the array of publications on pediatric hematology is this one written by Michael L. N. Willoughby, a consultant hematologist to the Royal Hospital for Sick Children in Glasgow, Scotland. The author's choice of format is a focus on pathology. Knowledge of normal physiologic mechanisms generally is assumed, since this information has been relegated to either a brief introductory chapter tabulating normal bone marrow and peripheral blood findings or the opening paragraphs of chapters dealing with specific topics. The reader might appreciate a more extensive or at least more useful source of normal values for comparison to the pathologic states of the hematopoietic system described in the text.
One strong characteristic of Dr Willoughby's book is its general