Book: Ink on paper, Sir Isaac Newton, “Opticks: A Treatise of the Reflexions, Refractions, Inflexions and Colours of Light,” The Royal Society, London, 1704 Before Treatment: The overall image of the title page before treatment. After Treatment: The overall image of the title page after treatment was completed. Before Treatment: A detail of the bottom right corner showing perforations through the paper. After Treatment: The perforated holes were filled with a slurry of cellulose powder and ink loss was toned in. Leave a Reply Cancel replyYou must be logged in to post a comment.