les, Sublimations of, 132
Fuoco, Regione del, 37

Gemellaro, Giuseppe, 18
" Mario, 19
" Carlo, 19, 20
General aspect of Etna, 34
_Genista Etnensis_, 45
Geological Maps of Etna, 117-18
Gibel Uttamat, 3
Gladstone's Account of Eruption, 58
Gravity, Specific, of Ejectamenta, 130
Great Crater, 57, 58
Grotto of Polyphemus, 75
" delle Palombe, 37
Growth of a Volcano, 123
Gurrita, Lake, 68

Hamilton, 14
Height of Etna, 26, 27
Hephaistos, Forge of, 4
Himilco, 81
Hoffmann, 22
Homer, 4
Houel, 14
Hybla Major, 63

Increase of Population, 33
Inessa, City of, 64
Inglesi, Casa, 51, 52
Inns, Sicilian, 65, 67, 69
Iron, Nitride of, 134
" Perchloride of, 132
Iron, Titaniferous, 127
Isola d'Aci, 75

Katana, 76, 77
Kircher, 12

Labradorite, Analysis of, 125, 126
La Cisterna, 101
Latitude of Crater, 2
La Scaletta, 75
Lava, Analysis of, 131, 132
" Specific Gravity of, 130
" Decomposed, Analysis of, 133
Lavas, Microscopic Analysis of, 135-141
Lavas of Etna, 125-141
Linguaglossa, 70
Longitude of Crater, 2
Lucilius Junior, 7-9
Lucretius, 6
Lyell, 23
Lyell's Researches, 118-122

Magnetite, 139
Maletto, 68
Maps, Geological, of Etna, 117, 118
" of Etna, 13, 16, 21-24
Mascali, 71
Microscopic Analysis of Lavas, 135-141
Milo, 108
Mineral Oil in Lava, 129
Minor Cones, 34-36
Mongibello, 3
" Axis of, 122
Monte Calanna, 107
" Capreolo, 118
" di Mojo, 36,81
" Minardo, 34
" Ste. Sofia, 36
" Fusara, 37
" Grigio, 111
" Lepre, 85
" Nocilla, 118
" Rosso, 99
" Spagnuolo, 69
" Ste. Sofia, 95
Monti Rossi, 35, 91
Mules, 47

Name of Etna, 3
Natural Boundaries of Etna, 30
Naxos, 81
Newer Pliocene Strata, 120
Nicolosi, 46
Nitride of Iron, 134

Observatory on Etna, 50
Oil, Mineral, in Lava, 129
Olivine, 139
" Analysis of, 127

Palombe, Grotto delle, 37
Paterno, 63
Pennisi, Baron, 71, 72
Piano del Lago, 51
" di S. Leo, 90
Piedimontana, Regione, 37, 38
Pii Fratres, 80, 81
Pindar, 4
Polarized Light, applied to Analysis of Lavas, 136-139
Polyphem