Volcanic raunch hits Edinburgh, blooms sweep Brussels and Henri does the can-can: the week in art

Edinburgh art festival erupts with Del LaGrace Volcano, Belgium lays down a marker for public art and Toulouse-Lautrec captures a dancer – all in your weekly dispatch Edinburgh art festival Science-minded artist Katie Paterson finds a natural home in the Collective Gallery’s repurposed observatory on Calton Hill, while Del LaGrace Volcano, Eva Rothschild and more show in the many other memorable…