names and reactions and a key to relevant references. This is followed by the list of references cited (2743 in all), an index to the enzyme list, relating both recommended and systematic names to the corresponding enzyme number, and a subject index. The layout throughout is logical and straightforward and makes the tracing of individual enzymes a relatively simple task. These recommendations have gone a long way towards clearing the confusion that has existed in this field and towards ensuring that new enzymes are introduced and identified without ambiguity. They should prove of considerable value not only to enzymologists per se but to all concerned indirectly with enzyme reactions.
BOOKS
RECEIVED
FOR REVIEW
Bread. An Assessment of the Bread Industry in Britain. The TACC Report. By Technology Assessment Consumerism Centre. Intermediate Publishing Ltd., London, 1974. pp. 89. E1.25. Introduction to Molecular Embryology. London, 1974. pp. xi + 176. f2.45.
By J. Brachet. The English Universities
Press Ltd.,
The Chemistry and Metabolism of Drugs and Toxins. An Introduction to kenobiochemistry. By M. Briggs and Maxine Briggs. William Heinemann Medical Books Ltd., London, 1974. pp. xii + 386. E5.00. Progress in Medicinal Holland Publishing
Chemistry. Vol. 10. Edited by G. P. Ellis and G. B. West. NorthCompany, Amsterdam, 1974. pp. x + 294. $30.00.
Environmental Medicine. Edited by G. M. Howe and J. A. Loraine. William Medical Books Ltd., London, 1973. pp. xii + 271. g6.00. Advances in Cancer Research. Vol. 18. Edited by G. Klein and S. Weinhouse. Press, London, 1973. pp. ix + 409. f 12.90.
Heinemann Academic
Mercury, Mercurials and Mercaptans. Edited by M. W. Miller and T. W. Clarkson. Charles C. Thomas, Illinois, 1973. pp. xvii + 386. $19.75.