Colonel Rigby states that nineteen thousand slaves from the Nyassa country alone pass annually through the custom-house at Zanzibar. They, however, represent but a small portion of the sufferers. Besides those actually captured, thousands are killed and die of their wounds and famine; thousands more perish in internecine war waged for slaves with their own clansmen and neighbours. The numerous skeletons seen among rocks and woods, by the pools, and on the paths of the wilderness, attest the awful sacrifice of human life. The doctor saw that a small armed steamer on Lake Nyassa could, by furnishing goods in exchange for ivory and other products, exercise a powerful influence in stopping the traffic in that quarter. The expedition had spent from the 2nd of September to the 27th of October in exploring the lake, and their goods being now expended, it was necessary to return to the ship. On their way back they fell in with a number of Manjanga families, driven from their homes by Ajawa raids, taking shelter among the papyrus growing on Lake Pamalombe, supporting themselves on the fine fish which abound in it. The party reached the ship on the 8th of November, but in a weak condition, having latterly suffered greatly from hunger. On the 14th they received a visit from the bishop, who appeared in excellent spirits, and believed that all promised well for future success. Many of the Manjanga had settled round Magomero to be under his protection, and it was hoped that the slave trade would soon cease in the neighbourhood. He here arranged to explore the country, from Magomero to the mouth of the river, and it was agreed that the "Pioneer," her draught being too great for the upper part of the Shire, should on her next trip not go higher than Ruo. The bishop's hope was to meet his sisters and Mrs Burrup, whose husband was one of his assistants. With three hearty cheers, the "Pioneer" steamed down the river. The rain ceasing, she unfortunately ran on a shoal, and was detained in an unhealthy spot for five weeks. Here the carpenter's mate, a fine healthy young man, was seized with fever and died. A permanent rise in the river enabled them at last to get on. On reaching Ruo, they heard that Mariano had returned from Mozambique, and was desolating the right bank of the river. He had lived in luxury during his nominal imprisonment, and was now able to set the Portuguese at defiance. An officer sent against him, instead of capturing the rebel, was captured himself, but soon returned to Tete with a present of ivory he had received. The Zambesi was reached on the 11th of January, 1862, when the "Pioneer" proceeded to the Great Luabo mouth of the river. On the 30th HMS "Gorgon" arrived, towing the brig which brought out Mrs Livingstone and some ladies about to join the University mission, as well as the sections of a new iron steamer intended for the navigation of Lake Nyassa. The name of the "Lady Nyassa" was given to the new vessel.