REVIEWS

Books reviewed in this article: Analysis Using Glass Electrodes . By P. W. L inder , R. G. T orrington and D. R. W illiams . The European Garden Flora . Volume II Monocotyledons (Part II). Ed. by S. M. W alters , A. B rady , C. D. B rickell , P. S, G reen , J. L ewis , V. A. M atthews , D. A. W ebb , P. F. Y eo and J. C. M. A lexander . Photoperception by Plants . Ed. by P. F. W areing and H. S mith . Mate Choice in Plants: Tactics, Mechanisms and Consequences . By M ary F. W illson and N ancy B urley . The Nature and Practice of Biological Control of Plant Pathogens . By R. J ames cook and K enneth F. B aker .