Immediately above us a perfectly conical peak raised its head to the height of at least five hundred feet;* this hill was covered with rich grass, and there could be no doubt that it was of volcanic origin, for the rock of which it was composed was a vitrified lava resembling that of Ascension. It is from this lava that the natives form their most deadly spears, for which purpose it answers well, as it fractures easily, and the fracture resembles that of the coarse green glass of England; indeed a lump of this rock might readily be taken for a part of a glass bottle. (*Footnote. This hill may be easily recognized by a precipitous cavity near the summit on its southern side, which may be seen at some distance.) The horses and sheep revelled in the luxuriant pasture. The hill we had encamped on formed a sort of plateau; behind us stood dark mountains, and in our front lay fertile plains, from which green hills rose one behind the other until they were lost in the distance, without any perceptible change in the character of the country. To the eastward the prospect was similar, as well as to the westward, except that in this direction the hills were more lofty, and behind these the tropical sun was hurrying down with a rapidity of movement never witnessed by those who live in the gloomy climes of the north. The men all looked healthy and full of hope; the cool sea-breeze refreshed my feverish frame: I painted in fancy the rapid progress that this country would ere long make in commerce and civilization, and my weakness and fatigues were all forgotten. DISTANT EXPANSE OF WATER. February 28. At dawn this morning the sheep could not be found; tempted by the goodness of the feed they had broken out from the little enclosure we had made for them and had wandered off. The stock-keeper and two of the men, having ascended the conical hill behind us to try if they could see them from it, reported on their return that they could descry a large lake or expanse of water, which bore about south by west from us. VEXATIOUS DELAYS. Whilst the search for the sheep was continued I sent another party up the hill to observe more particularly this sheet of water, who returned with a report similar to that of the stock-keeper, and I therefore determined, as soon as everything had been prepared for starting, to move off in the direction pointed out; unfortunately the sheep were not found till near noon but, as I was afraid we should consequently lose a whole day, I started directly after they were brought in. We had not proceeded more than half a mile ere I had cause to repent this measure, for two or three of the men suffered severely from exposure to the sun, and one of them became so unwell that I was obliged to halt the party. The spot I chose was the bank of a stream, shaded over by dense trees and, if anything could have atoned for the mortification of being compelled to halt when so anxious to get on, the cool beauty of this spot would have done so.