On reaching Loanda, although no vessel had arrived to relieve the Perry, yet, as her provisions were nearly exhausted, preparations were made to leave the north coast. The day before sailing, November 29th, a letter addressed to the commander of any U. S. vessel-of-war, was left in charge of the commercial agent of the Salem House. After recapitulating the occurrences of the last cruise, the letter stated that the correspondence with the collector had secured to our merchant vessels more consideration than formerly from the custom-house; and gave information that cruisers were often met at night, and that, therefore, the Perry had always four muskets and the two bow-guns ready for service at a moment’s warning. A list of signals, established between the two commodores, was inclosed. It was stated that Ambriz was considered the best cruising-ground; although the Perry had three times run up to Benguela, and once as far as Elephant Bay, having deemed it advisable to show the vessel on the entire line of coast. It was also stated that landing the Chatsworth’s crew at Ambriz having been regarded as prejudicial to the interests of the American factory, the agent had been informed that no more slave-crews would be landed at that place; and that it was believed that there were then no American vessels, with the exception of three or four legal traders, on the south coast. Although it was rumored that several vessels, fitted for the slave-trade, had gone round the Cape of Good Hope into the Mozambique Channel. On the following day, the Perry sailed for the north coast. Off Ambriz a visit was made to the British flag steam-frigate. The cases of the Navarre and Volusia, together with other instances of interference with the American flag, were discussed with the British commodore. The copies of the affidavits, brought from St. Helena, were examined, from which, with other information in the commander’s possession, it clearly appeared that, when the Navarre was first boarded off Benguela by the officer of the Water-Witch, her papers were found to be in form, and she was passed accordingly. When boarded by the Fire-Fly, a few days afterwards, the commander of that vessel declared her papers to be forgeries, and they were destroyed. The prize-officer, sent from the Fire-Fly to St. Helena in charge of the vessel, testified in the admiralty court, that he had no knowledge of the Navarre’s papers. The commodore acknowledged that in the case of the Navarre there appeared, at least, some discrepancies in the different statements. Full reports, embracing these points, were made to the American commodore. The social intercourse with the commander-in-chief had always been of the most agreeable character. Commodore Fanshawe, C. B., was Aid to the Queen,--a man of distinguished professional abilities, and of great moral worth. He is now the admiral in command of the British naval forces in the West Indies, and on the north coast of America.