THURSDAY, OCT. 29. Our Indian scouts, who came in yesterday, reported the discovery of a large band of Californians in the cover of the hills within the vicinity of Monterey. They probably purposed an attack on the town last night, as the garrison had been weakened by the absence of thirty men, who had left, under the command of Capt. Maddox, for San Juan. But the unexpected arrival of Col. Fremont frustrated their plans. We might have a battle with them were there horses here; but to attempt it on foot, would be like a man with a wooden leg chasing a hare. Monterey has at present much the aspect of a military garrison. The streets are barricaded; a patrol is kept up night and day; no one is permitted to leave without a written passport, and no one allowed to enter without reporting himself to the police. No one can be in the streets after nine without the countersign. Every thing, of course, in the shape of amusement is at an end; even ordinary business is in a great measure suspended. You hear only the roll of the drum at muster, and the toll of the bell over some one going to his last rest. FRIDAY, OCT. 30. One of the guard in charge of Col. Fremont’s horses, in the vicinity of the town, was approached, this afternoon, by two Californians on horseback, who inquired if he had seen a buck break from the woods near by. Having by this natural question laid suspicion, they entered into conversation on other topics, watched their opportunity, seized his rifle, shot him, and dashed off at full speed. The nefarious act produced a profound sensation in the camp. The shot, however, proves not mortal, so that the wounded man may yet have an opportunity of facing his foe in the field. SATURDAY, OCT. 31. Enlistments are going on actively among the emigrants recently arrived on the banks of the Sacramento. The women and children are placed in the missions; the men take the rifle and start for the battle-field: such is their welcome to California. The Israelites entered the land of promise by arms, and established themselves by the force of their military prowess. But this is not quite the land of promise, nor are these Israelites who stream over the Rocky Mountains. But they are a sturdy band, whose enterprise will cover these fertile hills with golden harvests. They have pitched their tents by the water-courses, and those tents they will never strike. They are enlisted into the service mainly through the activity of Capt. Montgomery, who commands the Portsmouth, and is military commandant of the northern department of California. His measures have been judicious, his action prompt, and he has rendered substantial service in supplying from the emigrations the sinews of war. Every American in California shows his entire stature; no one is lost in the crowd; no voice is drowned by a general clamor; every action tells. It is a blow which thunders by itself on the great anvil of time. It is another rock rolled into the foundations of a mighty empire.