[Napoli], B. Calao, [1862]. Broadsheet (37.0 x 26.8 cm). Original lithograph.

A fine lithograph, showing the crater of Mount Vesuvius from above in scale 1:10,000. The caption includes notes on its height, size, and orientation. The drawing, made after the rather spectacular 1861 eruption, is by Verneau himself, the lithography by B. Colao. In the top margin is the hand-written dedication, signed by Verneau, to "Carlo Ste Claire Deville", i.e. the French geologist, mineralogist, and oceanographer Charles Joseph Sainte-Claire Deville (1814-1876). Some light soiling, otherwise a very good, clean copy. Furchheim, Bibliografia del Vesuvio, Carte e vedute (maps and views) p. 217.