Abich, 22 Acesines, River, 81 Aci Reale, 72, 73 Acis, River, 73 Acque Grande, 73 Aderno, 65 Adranum, City of, 66 Æschylus, 4 Aetna, Town of, 64 Ajo, Fountain of, 85 Alcantara, Valley of, 69 Amphinomus, 80 Analcime, Analysis of, 128 Analcite, 127 Analysis of Augite, 126 " " Labradorite, 125, 126 " " Olivine, 127 " " Titaniferous Iron, 127 " " Analcime, 128 " " Mineral Oil, 129 " " Volcanic Ashes, 131 " " Lava, 131, 132 " " Sand, 131 " " Scoriæ, 131 " Microscopic, of Lavas, 135-141 " " Siderazote, 133, 134 " " Sublimations, 132 " " white friable substance, 133 Anapias, 80 Arethusa, Fountain of, 85 Ascent, Fatigue of, 60 Ashes, Volcanic, Analysis of, 131 " " Specific Gravity of, 130 Atlas des Aetna, 23 Augite, Analysis of, 126 Axis of Mongibello, 119, 122 " " Trifoglietto, 119, 122 Baltzer, 24 Basalt, Columnar, 75 Base, Circumference of, 30 Belpasso, 63 Bembo, Cardinal, 10 Biancavilla, 65 Boccarelle del Fuoco, 36 Bocche eruttive, 110 " del Fuoco, 36 Borelli, 90 Bosco di Bronte, 99 Botanical Regions, 40-42 Boundaries of Etna, 29 Brilliancy of Stars, 48, 49 Bronte, 67, 68 Brydone, 15 Campi Phlegræi, 14 Campus Piorum, 80 Cardinal Bembo, 10 Carpinetto, Forest of, 39 Carrera, 12 Casa del Bosco, 48 " Inglesi, 51, 52 Castagno di Cento Cavalli, 39 " della Galea, 39 Catania, 76-78 " Destruction of, 94-96 Caverns of Etna, 37 Cavern of Thalia, 37 Centenario, 108 Chestnuts, 39 Circumference of base, 30 Cisterna, 101 Coltivata, Regione, 37, 38 Cones, Minor, 34-36 Crater of Elevation, 114 " of Eruption, 114 " The Great, 56-58 Craters, Minor, 34-36 Cultivated Region, 38 Cyclops, Rocks of, 75 Decomposed Lava, Analysis of, 133 Desert Region, 39, 40 Effects of Refraction, 59, 60 Elevation, Crater of, 114 Elie de Beaumont, 21 Elie de Beaumont's Classification, 115, 116 Empedokles, 10 Errors in Maps, 24 Eruption, Crater of, 114 Eruptions, General Character of, 112 " Number of, 113 Etna, the Home of Early Myths, 9 " a Submarine Volcano, 122 Enceladus, 4 Fatigue of Ascent, 60 Fazzello, 11 Ferrara, 15, 16 Filoteo, 11 Flood of 1755, 98 Forest of Carpinetto, 39 Fratelli Pii, Cone of, 111 Fumaroles, Sublimations of, 132 Fuoco, Regione del, 37