Yesterday we went down to Margate to see Edmund de Waal’s new installation called Atmosphere, porcelain bowls hung in rows with musical intervals in front of the great East window looking out to the north sea.   The Dean of Canterbury was there and the Canterbury Cathedral choir.  They sang motets from the balcony and it was obvious that his work is a form of monastic contemplation stripped to shape and the space in between, although he talked more of Constable and Turner looking up at the clouds and the dissolution of the distant horizon.