LONDON.-A rare, handwritten, working manuscript by Sir Isaac Newton for the last book he ever wrote is for auction at Bonhams, as part of the sale of the Roy Davids Collection of Papers and Portraits in London on 29 March. It is estimated at between £40,000-50,000. Newtons world famous reputation as a mathematician and scientist has tended to obscure his deep interest in – and knowledge of – theology. His immersion in religious thought and, in particular, biblical study only emerged comparatively recently in 1991 when the bulk of his papers on theology, held at the University of Jerusalem, became widely available. He has been described both as perhaps the greatest biblical scholar of his age, and as an original Hebraic scholar. The document in the Roy Davids sale headed, The Question