Important from Arizona.
--A letter just received from Masilla, Arizona Territory, announces that the people of that Territory have expelled the Federal troops, and have entire possession.The writer (a regular Black Republican) is evidently most horribly frightened; he says the rebels must be at once exterminated, or otherwise all Arizona will shortly become the stronghold of secession.
The people have the entire ascendancy, are in possession of Fort Bliss and all the strong points of the Territory. Who is to put them down, is not so clearly seen. The ball moves on. --Baltimore Republican.