COMPETITION : DETAILS No 333

IN WHICH painting by which painter can you find this piece of green ground?

DETAILS 331 came from Jusepe de Ribera's "Jacob's Ladder" or "Jacob's Dream" (1639) . Joseph slept on a stone for a pillow and when he woke he said "this place is terrible". The painting is in the Prado, Madrid.

The first three correct entries drawn were from: Deanie Welling from Essex; Peter Roebuck from Manchester ; and Christophe Sutton from South Yorks. Each will receive a bottle of champagne, as will this week's winners. Answer, on a postcard, (to arrive by Wednesday 30 April) to: DETAILS 333, IoS, 1 Canada Square, London E14 5DL.