Verso of a plan of the reconstruction of the Baths of Nero, Rome, by Andrea Palladio

NOTES: This shows a method of copying a drawing by covering the verso with (charcoal?) which enables the copyist to lay this drawing on a clean sheet and by drawing over the lines on the recto an outline copy of the plan can be transferred to the sheet below. By enlarging the image above some of the impressed lines can be seen. (See RIBA125296 for recto) This sheet is numbered III/1 in the Burlington-Devonshire Collection.