_BY LIEUTENANT G.H.P. WHITE, ROYAL NAVY._ On the evening of the 13th of July, 1830, I set off from Catania with a party of my messmates, to ascend Mount Etna, taking the necessary guides, and two sumpter mules to carry the provisions, &c., as nothing in that way can be procured after leaving Nicolosi, which is a small village about twelve miles from Catania. Etna is divided by the Sicilians into three several regions. The first is called Piè de Montagna, the second Nemerosa, and the third Discoperta. The ascent, though very gradual, commences immediately on leaving the city of Catania, over a tolerably constructed road; the country around is formed on an ancient volcanic soil; probably the third eruption mentioned by Thucydides, which happened in the sixth year of the Peloponnesian war, and the second of the eighty-eighth Olympiad. Traversing the lands of Battianti, and St. Giovanni della Punta, the road is constantly over the lava, and the country on either side is delicious. Trecastagne, nine miles from Catania, is seated on the acclivity of a high volcanic mountain. The scene here is beautiful and picturesque. Near the principal church the view is most extensive. Towards the east the mountains of Calabria, the sea stretching from Taormina to Catania, bathing the sides of Etna, covered with vineyards, woods and villages: northward rises the mountain itself, surrounded by its progeny of pigmy mountains; these have been thrown up in various forms, composed principally of cinders, and covered with rich vegetation. The freshness of the air, the beauty and picturesque situations of the houses surrounded by lofty and fine trees, the over-teeming fertility of the soil, and the laughing fields, where golden Ceres still lingers, unwilling to quit her favourite abode, intersected by courses of lava, as yet unproductive, make this view one of the most beautiful and interesting that can be imagined. These mighty streams of once liquid fire, extending in many places ten miles in length, by two or three in breadth, fill the mind with horror and astonishment: that such wondrous masses, consisting of earths, stones, and minerals, fused and mixed, could be driven forth in one wild current from the mountain, makes us pause, and confounds any attempt to reason on the phenomena.--And, although the lava for many centuries lays waste the superincumbent land, yet, after a certain, but very long period, it is brought by human industry into such a state as to become the richest soil for cultivation: but when we reflect on the necessity of some ages to effect this wished-for state of decomposition, we bewilder the mind without arriving at any certain conclusion. When this process is duly effected, the cactus opuntia, or prickly pear, is planted, which hastens the desired event, and has the power to break up the lava, and render it fit for productive purposes. Five miles from Trecastagne is Nicolosi, a small village which has