This is one of two nude studies in this sketchbook, the other being of a figure in a similar pose on the recto of this page (Tate D18567; Turner Bequest CCXI 28). It is also one of only three sketches in the book which uses watercolour. Turner has used the same red watercolour pigment for the drapery and (much watered down) the flesh tone. There are two sky studies in watercolour on folios 3 and 4 (Tate D18529, D18530; Turner Bequest CCXI 3, 4).
Chumbley and Warrell 1989, p.29 no.10.