With the sketchbook turned to the right the page has been divided into three separate sketches. The top and middle sketches depict, not Bothwell Castle as Finberg suggested,1 but the ruins of the old Douglas Castle in Lanarkshire as seen from the west. Standing on a rise above the Douglas Water, shown at the left of each sketch, is all that remains of the late seventeenth-century castle: the round corner-tower of the encircling wall. Turner made further sketches of this structure on folios 21 verso and 22 (D26300, D26301) where he also drew the mid eighteenth-century castle that replaced it. For more information about Turner’s visit to Douglas Castle see folio 21 verso.