Bruce made careful preparations to illustrate this monument at his leisure, but none of the drawings in Lady Thurlow’s possession are completed—they are, in fact, mere rough working sketches. He says:—
The sections, elevations, and plans, with the whole detail of its parts, are in the King’s Collection.
The Kinnaird collection, however, contains only:—
1. A very faint drawing in pencil of exterior of amphitheatre on its major axis: the details of the lower storey have not been filled in.
2. Pencil sketch of interior on major axis.
3. Pencil sketch of interior on minor axis, showing the extent of the breach which then existed.
4. Pencil sketch, tinted in Indian ink, of general plan, covered with notes and dimensions.
5. Drawing in pencil and Indian ink of one quarter of plan of the lowest stages of amphitheatre, showing podium of arena and staircases [[Pl. XI.]]
6. Drawing in pencil and Indian ink of one quarter of plan of one of the upper stages of the amphitheatre.
7. Careful drawing to scale in pencil of general section, numerous notes, and dimensions on the face, and sketches of parts of the plan on the back.