A compilation of three films; 'The Femur from a 5 1/2 Day Chick Embryo' (Canti), 'Dark Ground Illumination' (A. F. W. Hughes, showing the internal structures of the cell, possibly from 'Tissue Culture from Phase Contrast') and 'Phagocytosis' (A. F. W. Hughes Strangeways Research Laboratory and Papworth; macrophages in tissue cultures of embyronic chick lungs).