Letters from Mozambique, dated the 22d of June, mention a
conspiracy formed by certain Portuguese refugees, to overturn the Government of Donna MARIA, with the intention of proclaim- ing Don MIGUEL, or as is more probable, with the design of plun- der. The plot was partially successful ; and the insurgents held possession of the principal town from the 26th of May to the 14th of June, when the British brig Leveret, commanded by Lieutenant BOSANQUET, arrived in the harbour ; and with his assistance the conspirators were taken prisoners and carried to the Cape of Good Hope, to be forwarded thence to Portugal. " The Senate of the Capital of Mozambique" addressed a letter of thanks to Lieutenant BOSANQUET, for his seasonable aid.