MONDAY, NOV. 16. A Delaware Indian, quite out of breath, entered Col. Fremont’s camp this morning with the intelligence that an irregular engagement took place last evening between a party of forty Americans, and a hundred and fifty Californians, on the Salinas river, about fifteen miles from Monterey. The Americans were coming down from San Juan, and had with them three hundred fresh horses which they had brought from the Sacramento. The intelligence of their approach had reached the Californians, who had mustered all their force in this quarter, more for the purpose of capturing the horses than their riders. But the Americans, who were sixty strong, anticipating the possibility of an attack in crossing the river, left their horses, except those they rode, in the rear with twenty of their number, while forty came ahead to engage the Californians. They were surprised at their numbers, but rushed at once into the encounter. Capt. Foster was killed in the first charge, and Capt. Burrows, who was wounded in the first, fell in leading the second. Two American privates were killed, and a number of Californians. The encounter took place near sunset, and the Americans remained in possession of the ground. The Delaware Indian, when the firing had slackened, left the field to bring the intelligence to Col. Fremont; but having to turn the enemy’s line, he was attacked by three Californians—one of whom he shot with his rifle, another he killed with his tomahawk, and the third fled. His horse broke down before he got in, and he ran the rest of the way on foot. He reports that Thomas O. Larkin, Esq., the American consul, had been captured the night before, while at a rancho between this and San Juan. He had left Monterey to visit a sick child at San Francisco, and stopped for the night, when he was suddenly pounced upon: nor wife nor child will in any probability see him soon again. He will be closely guarded; his life will be considered good for that of several prominent Californian officers who have broken their parol; and not unlikely some half-dozen may, in the event of disaster, be redeemed through his liberation. TUESDAY, NOV. 17. Col. Fremont, with his three hundred riflemen, took his departure from Monterey this morning. They presented a very formidable line as they wound around the bay and disappeared in the shadows of the hills. Spur on my men; the bugle peals Its last and stern command,— A charge! a charge!—an ocean burst Upon a stormy strand.