NUL42005 Ms R 171 f.285 Plan of Canterbury Cathedral and the plumbing system, from the \'Eadwine Psalter\', c.1150 (vellum) by English School, (12th century); Trinity College, Cambridge, UK; (add.info.: Plan by Prior Wilbert (1153-67) of the hydraulic system that circulated water into the monastic complex through cornfields, vines and orchards, around the priory and out again. 10,000 litres of fresh water every hour.); English, out of copyright.