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STUDIES IN CLINICAL ENZYMOLOGY, by D.P. Mullan. St. Louis: The C. V. Mosby Company, 1969, 238 pp., $12.00

This little book of about 230 pages is noteworthy on two counts. First, it contains an excellent up-to-date summary of recent advances in clinical enzymology; and second, the author succeeds in making the book easy to read, despite the complexity of the subject. To do so is quite an achievement, requiring the unusual talent of making understandable a topic most physicians would find recondite.
 There are eleven chapters each of which deals with a particular application of enzymology, such as cardiac infarction, African heart disease, pregnancy, inherited metabolic abnormalities, and so forth.