Contents. List of Contributors. Introduction. The Analysis of Fractured Membrane "Halves" (K.A.Fisher). The Brush Border: A Model for Structure, Biochemistry, Motility, and Assembly of the Cytoskeleton (D.R. Burgess). The Lysosomal Concept: From Isolated Particles to Acid Hydrolase Compartments of the Cell. (P.M. Novikoff). Glycoprotein Dynamics in the Chlamydomonas Flagellar Membrane (R.A. Bloodgood). A Structural Analysis of one Photosynthetic Membrane: Rhodopseudomonas Viridis (K.R. Miller). Molecular Cytochemistry of Freeze-Fractured Cells: Freeze-Etching, Fracture-Label, Fracture-Permeation, and Label-Fracture (P.P. da Silva).