By Jules Skotnes-Brown From the White Man’s Grave to the White Man’s Home? Experiencing ‘Tropical Africa’ at the 1924–25 British Empire Exhibition By Tim Boon, Roger Kneebone, Peter Heering, Klaus Staubermann and Yves Winkin A symposium on histories of use and tacit skills By Tim Boon, Annie Jamieson, John Kannenberg, Aleks Kolkowski and James Mansell ‘Organising Sound’: how a research network might help structure an exhibition By John Kannenberg Towards a more sonically inclusive museum practice: a new definition of ’the ‘sound object By Tom Ritchie Ventriloquised voices: the Science Museum and the Hartree Differential Analyser By Barbara Gribling The Panstereomachia, Madame Tussaud’s and the Heraldic Exhibition: the art and science of displaying the medieval past in nineteenth-century London By Sarah Baines From 2D to 3D: the story of graphene in objects By Jane Desborough Review: Science and Technology galleries at National Museums Scotland By James Mansell ‘A Chamber of Noise Horrors’: sound, technology and the museum By Ian Hutchings Giovanni Canestrini’s models of Leonardo da Vinci’s friction experiments