WEDNESDAY, AUG. 19. Several of Gen. Castro’s officers have just arrived in town, delivered themselves up, and been put upon parole. They state that the general’s camp, near the Pueblo de los Angeles, broke up a few days since in the night; that the general and Gov. Pico had started for Sonora with fifty men and two hundred horses; that their flight was hastened by the approach of Com. Stockton, with the forces of the Congress, on the north, and Maj. Fremont, with his riflemen, on the south. The commodore had reached, it appears, within a few hours’ march of his camp. The general had taken the precaution to send forward in advance a portion of his horses, to serve as fresh relays on his arrival. He expects to leave Col. Fremont on the right, and will be obliged to cross an immense sandy plain, lying between the Pueblo and Red River, where his horses will be for two days without water or food. He is to cross Red River, a broad and rapid stream, on a raft, the construction of which will detain him a day; his horses will swim, for California horses are trained to rush over mountain-torrents. The only hope of his capture lies in his detention at the river, unless Col. Fremont, anticipating his flight, has thrown a force south to intercept him. Once across the river he is safe; nothing but a tornado, or a far-striking thunder-bolt, can overtake a Californian on horseback. THURSDAY, AUG. 20. An Indian was brought before me to-day, charged with having stolen a horse. He was on his way, it appears, to Monterey, and when within thirty miles, his own horse having given out, he turned him adrift, and lassoed one belonging to another man, which he rode in, and then set him at liberty as he had his own. The owner arrived soon after, recovered his horse, and had the Indian arrested, who confessed the whole affair, and only plead in excuse that his own horse had become too tired to go further. I sentenced the Indian to three months’ labor on the public works. He seemed at first very much surprised at what he considered the severity of the sentence; but said he should work his time out faithfully, and give me no further trouble. As he was half naked, I ordered him comfortable apparel, and then delivered him over to Capt. Mervin, to be employed in excavating a trench around the newly-erected fort. FRIDAY, AUG. 21. A Californian is most at home in his saddle; there he has some claims to originality, if not in character then in costume. His hat, with its conical crown and broad rim, throws back the sun’s rays from its dark, glazed surface. It is fastened on by a band which passes under his chin, and rests on a red handkerchief, which turbans his head, from beneath which his black locks flow out upon the wind.