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Turner worked at least four distant views of the Channel Islands’ various land-masses and rocky coastal formations onto this page, some of which he identified with rapid notations. The land-masses depicted along the top of the page are identified as the neighbouring islands of Sark, Herm, Jethou, and Guernsey. Inverted in relation to the sketchbook as foliated, the spiky rows of protruding rocks immediately below are also identified by a note as the treacherous reefs near Alderney known as The Caskets. 1 For the recurrence of this geological phenomenon, see the listing under the entry for folio 90 recto (D23693; Turner Bequest CCLII 90).
J.T. Cochrane, A Guide to the Island of Guernsey, St Peter Port 1826, p.138.