Formerly, besides gold-dust and ivory, large quantities of grain, coffee, sugar, oil, and indigo were exported from Tete, but, on the establishment of the slave trade, the merchants found a more speedy way of becoming rich, by selling off their slaves, and the plantations and gold washings were abandoned, the labourers having been exported to the Brazils. Many of the white men then followed their slaves. After this, a native of Goa, Nyaude by name, built a stockade at the confluence of the Luenya and Zambesi, took the commandant of Tete, who attacked him, prisoner, and sent his son Bonga with a force against that town and burned it. Others followed his example, till commerce, before rendered stagnant by the slave trade, was totally obstructed. On the north shore of the Zambesi several fine seams of coal exist, which Dr Livingstone examined. The natives only collect gold from the neighbourhood whenever they wish to purchase calico. On finding a piece or flake of gold, however, they bury it again, believing that it is the seed of the gold, and, though knowing its value, prefer losing it rather than, as they suppose, the whole future crop. Dr Livingstone found it necessary to leave most of his men here, and Major Sicard liberally gave them a portion of land that they might cultivate it, supplying them in the mean time with corn. He also allowed the young men to go out and hunt elephants with his servants, that they might purchase goods with the ivory and dry meat, in order that they might take them back with them on returning to their own homes. He also supplied them with cloth. Sixty or seventy at once accepted his offer, delighted with the thoughts of engaging in so profitable an enterprise. He also supplied the doctor with an outfit, refusing to take the payment which was offered. The forests in the neighbourhood abound with elephants, and the natives attack them in the boldest manner. Only two hunters sally forth together--one carrying spears, the other an axe of a peculiar shape, with a long handle. As soon as an elephant is discovered, the man with the spears creeps among the bushes in front of it, so as to attract its attention, during which time the axe-man cautiously approaches from behind, and, with a sweep of his formidable weapon, severs the tendon of the animal's hock. The huge creature, now unable to move in spite of its strength and sagacity, falls an easy prey to the two hunters. Among other valuable productions of the country is found a tree allied to the cinchona. The Portuguese believe that it has the same virtues as quinine. As soon as the doctor had recovered his strength he prepared to proceed down the river to Kilimane, or Quillimane, with sixteen of his faithful Makololo as a crew. Many of the rest were out elephant hunting, while others had established a brisk trade in firewood. Major Sicard lent him a boat, and sent Lieutenant Miranda to escort him to the coast.