 The "Callan Bridge" picture presents him in an unusually light-hearted state of mind, although one still senses that the encroaching dark colours of the hedgerows betray a metaphorical colouring of mood.Certainly by the late 1940s and early 1950s Luke had become obsessed with technique, and in pictures such as "The Three Dancers", 1945, "Northern Rhythm", 1946, "The Dancer and the Bubble", 1947, and "The Rehearsal", 1950, all of which are technically of the highest order, one begins to wonder about the paucity of content, for these are exercises in pure technique.the murals which he executed in the early Fifties in the City Hall and Rosemary Street Masonic Hall were to be virtually his last paintings and thereafter, apart from the uncompleted mural in the Millfield Technical College (building demolished 2002, remains of mural retained by demolition contractor) and the coats-of-arms carved for the Governors of Northern Ireland, he did little new work.