The large bay lay about us, nearly smooth, as there was hardly a breath of wind stirring, though the boat's crew who went ashore told us that the long groundswell broke into a heavy surf on the beach. There was only one vessel in the port-- a long, sharp brig of about three hundred tons, with raking masts, and very square yards, and English colors at her peak. We afterwards learned that she was built at Guayaquil, and named the Ayacucho, after the place where the battle was fought that gave Peru her independence, and was now owned by a Scotchman named Wilson, who commanded her, and was engaged in the trade between Callao and other parts of South America and California. She was a fast sailer, as we frequently afterwards saw, and had a crew of Sandwich-Islanders on board. Beside this vessel, there was no object to break the surface of the bay. Two points ran out as the horns of the crescent, one of which-- the one to the westward-- was low and sandy, and is that to which vessels are obliged to give a wide berth when running out for a southeaster; the other is high, bold, and well wooded, and has a mission upon it, called Santa Buenaventura, from which the point is named. In the middle of this crescent, directly opposite the anchoring ground, lie the Mission and town of Santa Barbara, on a low plain, but little above the level of the sea, covered with grass, though entirely without trees, and surrounded on three sides by an amphitheatre of mountains, which slant off to the distance of fifteen or twenty miles. The Mission stands a little back of the town, and is a large building, or rather collection of buildings, in the centre of which is a high tower, with a belfry of five bells. The whole, being plastered, makes quite a show at a distance, and is the mark by which vessels come to anchor. The town lies a little nearer to the beach,-- about half a mile from it,-- and is composed of one-story houses built of sun-baked clay, or adobe, some of them whitewashed, with red tiles on the roofs. I should judge that there were about a hundred of them; and in the midst of them stands the Presidio, or fort, built of the same materials, and apparently but little stronger. The town is finely situated, with a bay in front, and an amphitheatre of hills behind. The only thing which diminishes its beauty is, that the hills have no large trees upon them, they having been all burnt by a great fire which swept them off about a dozen years ago, and they had not yet grown again. The fire was described to me by an inhabitant, as having been a very terrible and magnificent sight. The air of the whole valley was so heated that the people were obliged to leave the town and take up their quarters for several days upon the beach.