Books reviews in this article:Ashton, F. M., and A. S. Crafts, Mode of Action of Herbicides.Goss, James A., Physiology of Plants and their Cells.Ulmann, M., Analytische Kennzeichnung von Amylose und Amylopektin.Fungal pathogenicity and the plant's response. Herausgegeben von R. J. W. Byrdeund C. V. Cutting.Boerema, G. H., and Maria M. J. Dorenbosch, ThePhomaandAscochytaspecies described by Wollenweberand Hochapfelin their study on fruitrotting.