CHOICE: THE CRITICS: EXHIBITIONS

Africa Despite adverse pre-publicity, the RA appears to have pulled off a first with this exhibition spanning several millennia and an entire continent. That the objects are seen not ethnographically, but in terms of pure art, begs interesting questions on the nature of our aesthetic judgement. Royal Academy, London to 21 Jan 1996

HG Last days in which to catch this extraordinary installation by Robert Wilson and Hans Peter Kuhn, in London's old Clink Street Prison. A fascinating and terrifying journey through the artists' imaginations in the guise of HG Wells's The Time Machine. Clink St, London to 15 Oct

American photography 1890-1965 From the richest period in the development of photography this century, here are some of the USA's finest examples of reportage, portraiture (Babe Ruth by Nickolas Muray, left) and still-life. Look out in particular for Lange, Adams, Winogrand Weston and Weegee. Scottish National Gallery of Modern Art, Edinburgh to 26 Nov