P.W. Becraft, Development of the Leaf Epidermis. G. Giudice, Genes and Their Products in Sea Urchin Development. A. Camus and P.P.L. Tam, The Organizer of the Gastrulating Mouse Embryo. J.L. Bowman, S.F. Baum, Y. Eshed, J. Putterill, and J. Alvarez, Molecular Genetics of Gynoecium Development in Arabidopsis. B. Scheres and R. Heidstra, Digging Out Roots: Pattern Formation, Cell Division, and Morphogenesis in Plants. Index. Contents of Previous Volumes.