Leonardo's science and technology

Edwin M. Todd -- In the beholder's eye: Leonardo and the 'errors of sight' in theory and practice / Martin Kemp -- Leonardo da Vinci / Thomas Frangenberg -- Aristotle as a source for Leonardo's theory of colour perspective after 1500 / Janis Bell -- Physiognomical theory in Renaissance heroic portraits / Peter Meller -- Leonardo da Vinci's grotesque heads and the breaking of the physiognomic mould / Michael W. Kwakkelstein -- 'Il concetto dell'anima' in Leonardo's early skull studies ; Dissection and divinity in Leonardo's late anatomies / Martin Kemp -- An introduction to Leonardo's anatomical drawings / Jane Roberts -- Leonardo's botanical drawings / Francis Ames-Lewis.