The arrival of the Carron steam-vessel, despatched from the 'Tagus
by Admiral PARKER a week before the regular time, has _led to many conjectures as to the probable interference of England and Spain in the affairs of Portugal. It appears that Lord HERVEY had arrived from Madrid, and made a communication to the Portuguese Ministry at Lisbon, which they considered of sufficient importance to induce them to send for Don Miaum. from the army. It is said that a Regency is to be established, and the young Queen acknowledged; but that both Don Para° and Don MIGUEL are to be compelled to leave Portugal. Unless the affairs of the former improve, there will, we suspect, be no occasion for English awl Spanish interference to procure his ab- sence. Don MIGUEL will be a more difficult person to deal with.