‘Remains of the arches of the aqueduct which carried the Acqua Calda from the Caelian to the Palatine’, plate XXXIIII, fig. II, from a set of 77 plates,<i> G. Piranesi, Le Antichità Romane, vol. I</i>, bound in Paris by Tessier, 1803-1807, etching with engraving, by Giovanni Battista Piranesi, Rome