1INTRODUCTORY SKETCH, &c.
7V. THE CRATERS AND THEIR FUMAROLES.
2THE ERUPTION OF VESUVIUS OF 1871-1872
8VI. THE ELECTRICITY OF THE SMOKE AND ASHES.
3I. ACCOUNT OF THE ERUPTION.
9GENERAL CONCLUSIONS.
4II. NATURE OF THE LAVAS.
10REFERENCE TO THE PLATES.
5III. FUMAROLES OF THE LAVAS.
11NOTES BY THE TRANSLATOR.