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The slight wash compositions on adjacent versos generally appear to be inverted relative to the sketchbook’s foliation, but in this case the dark area suggests the interior of a bed with a curtain hanging across at the top right. The pale shape at the left may be a naked woman sitting with her arms raised, as there seem to be one or two touches of grey defining her breasts, although this reading may be fortuitous.
For a discussion of the improvisatory and often erotic nature of the watercolour studies making up most of this sketchbook, see the Introduction.
There is a slight continuation or offsetting of watercolour onto the unaccessioned recto of folio 20 (its verso being D28902). The unaccessioned, blank recto of the present leaf is numbered in red ink ‘19’ and stamped ‘CCXCI(c) – 19’; it has a little watercolour offsetting at the gutter from folio 18 verso opposite (D28898).