the second edition of "clinical aspects of immunology," edited by p. g. h. gell and r. r. a. coombs, is a comprehensive reference book that has been greatly expanded compared to its first edition. it contains a wealth of immunological information reflecting the research activity in this field over the past five years. the book is well-produced and consists of five sections, each with chapters written by experts in the respective fields. it is an essential reference for research immunologists and clinicians seeking detailed reviews of the immunological implications of various clinical conditions. however, the book may lack integration between chapters, making some main issues difficult to grasp. there is also a problem with nomenclature, particularly the use of the term 'allergy' in a broader sense. a section on immunosuppression, including a more detailed discussion on anti-lymphocytic serum, would be beneficial. despite these minor criticisms, the book is a major guide to the current state of immunological knowledge related to disease. the author hopes the next edition will appear sooner. the book received is "histochemistry: theoretical and applied" by a. g. everson pearse, third edition, 759 pages, published by j. & a. churchill, london, 1968. other books received include "biological properties of the mammalian surface membrane," "abnormal haemoglobins: a laboratory manual," "infektions fibel," and "growth, disease and ageing."the second edition of "clinical aspects of immunology," edited by p. g. h. gell and r. r. a. coombs, is a comprehensive reference book that has been greatly expanded compared to its first edition. it contains a wealth of immunological information reflecting the research activity in this field over the past five years. the book is well-produced and consists of five sections, each with chapters written by experts in the respective fields. it is an essential reference for research immunologists and clinicians seeking detailed reviews of the immunological implications of various clinical conditions. however, the book may lack integration between chapters, making some main issues difficult to grasp. there is also a problem with nomenclature, particularly the use of the term 'allergy' in a broader sense. a section on immunosuppression, including a more detailed discussion on anti-lymphocytic serum, would be beneficial. despite these minor criticisms, the book is a major guide to the current state of immunological knowledge related to disease. the author hopes the next edition will appear sooner. the book received is "histochemistry: theoretical and applied" by a. g. everson pearse, third edition, 759 pages, published by j. & a. churchill, london, 1968. other books received include "biological properties of the mammalian surface membrane," "abnormal haemoglobins: a laboratory manual," "infektions fibel," and "growth, disease and ageing."