fats, proteins, polysaccharides, enzymes and intermediary metabolisnt. Indeed so commonplace is this sequence that a lay reader could be forgiven for believing that the Almighty himself had followed such a sequence in creating life. The authors of A Guide Book to Biochemistry, however, start by recognizing that macromolecules are characteristic of living tissue and the first section of their book is on the "Structure and Function of Macromolecules".

Initially one might suppose this represents an attempt at running before having learnt to walk. However, our guides in a remarkably simple and clear manner rapidly introduce us to the complexity of "big" molecules, mainly proteins, and the forces involved in maintaining their structure. From structure, function follows, and in particular the extraordinary manner in which proteins can bind to other molecules by adopting a specific shape is emphasized. Which leads naturally on to considering enzymes.

The second section of the book deals in adequate detail with "Intermediary Metabolism", but perhaps surprisingly ends with considering amino-acid metabolism. The reason behind this unusual sequence is that the authors wish to emphasize again their role in the synthesis of macromolecules, which leads to Section 3 of the book, entitled "Molecular Genetics and Protein Synthesis". So we end the book as we began, considering the structure and function of macromolecules.

The authors express the hope that the readers will then go back to the beginning and read it again. The paperback edition at A1.00 represents good value for an interesting and unusual introduction to biochemistry.

P. H. Whitehead

A DESK REFERENCE

Psychiatric Drugs Gilbert Honideld and Alfreda Howard (Academic Press, New York, 1973; 214pp., index, U.S. $8.95)

This handy little reference book on the clinical uses of psychiatric drugs was designed for mental health professionals who require non-technical psycho- pharmacologic guidance on current practice. The book is fairly short but packed with useful information. Major sections deal with each class qf psychiatric drugs as well as such topics as side effects, current developments and electro- shock therapy. Of special interest are the detailed lists which set out trade name, generic names and drug identification tables suited to use by the non-

. .. specialist.

The book will be of interest for reference by psychologists, social workers, psychiatric nurses and even lawyers and probation officers who require simply- - . presented general information about psychiatric drug therapy.

A

A.R.B.

TARTAN STOCKTAKING

Science and the Police: Report of a Study Group (British Association for the Advancement of Science, 1974; 50p, post free)

The British Association exists to provide information for the public about science and technology and their social consequences. This report is the result of a seminar held at the Scottish Police College and it is clear that the seminar fulfilled to the letter the objects for which the Association exists.

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