Opening 23 January, visitors to the Tate Modern will be able to see a major exhibition of pieces by French artist Pierre Bonnard, several of which will be displayed in the way that he painted them—as canvases attached to the wall without their frames. Curator Matthew Gale explained why Tate Modern wanted to recreate Bonnard’s unconventional studio style: “Most artist use stretchers, a wooden structure that keep the canvas flat, but he nailed them to...