Alexander Watt, The Art of Paper-Making
“ These fibres are chiefly used for papers which require strength rather than whiteness of colour, such as wrapping papers, &c."Broke" paper is a term applied to paper which has been imperfectly formed on the paper machine or damaged while passing over the drying cylinders. Imperfect sheets when they are not sold as retree, and clean waste paper, also come under this designation and are re-converted into pulp after undergoing the treatment described below. ”
