View this artwork by appointment, at Tate Britain's Prints and Drawings Rooms
The orientations of the individual sketches here are largely unclear. With the gutter at the top, there seems to be the profile of a railway waggon inverted at the top left, and some sort of mechanism or device at the top right. The objects towards the bottom left might be fittings at Farnley Hall, Yorkshire, as sketched from folio 74 verso (D09770) onwards, and the profile along the outer edge of the page may be of an architectural detail there. See the Introduction to the sketchbook for other Farnley and nearby Yorkshire views in this book.
Without identifying any of the items, John Gage suggests that ‘the chemical imagery’ of this and a handful of similar diagrams scattered through in Turner’s sketchbooks ‘takes us into the mythological world of traditional science’.1
Gage 1969, p.136.