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other smaller cottages disposed around it, something in the form of a square, but not a single tree or other relieving object to soften the burning reflection from the deep sand which formed the site of the fort and of the governor's residence.

      The dinner went off with great éclat, and no little amusement at the original attempts of the black waiters (of course slaves) to vie with European refinement. Towards evening, when tea had at length been handed round, the entertainment was concluded with, "for the last time of performance," a dance of the native women belonging to the neighbouring village. The whole affair lasted for about an hour, when, glad to escape the heat and noise, the officers returned to their ship.

      Little further remains to be said of Delagoa Bay, though many interesting facts might have been elicited in relation to the slave-trade, had the Nemesis remained there longer. It appears very evident that formerly the trade was carried on with greater atrocity than at present, but enough is still known respecting it to make us look upon the natives themselves as the worst abettors of the traffic. The passions of the savage chiefs seem only to be withheld for a moment, not suppressed, by the difficulty of procuring slaves; and when they can neither find enemies to seize, nor culprits to condemn, they sometimes send a sort of marauding expedition to seize by treachery their own people, and sell them into slavery. It is stated by Captain Owen, that, within even a few years, under a former commandant, some of the chiefs had been persuaded to sell their harmless subjects for so trifling a sum as a dollar and a half each, or about seven shillings, to be paid, not in money, but in merchandize of trifling value, and that several cargoes had been obtained in this way for the Brazilian market.

      If we look for the most thriving mart for slaves upon the east coast of Africa at the present time, we shall find it at the river Quillimane, a little more than five hundred miles to the north of Delagoa Bay. It lies about midway between that settlement and Mozambique. There the slaves are purchased for coarse cloth, gunpowder, beads, cutlery, &c.; and the "arrival of one of the little traders, with his pedler-kind of stock, among one of the native tribes in the interior, becomes the signal for general warfare, in which the weak become the victims of the strong." A few years ago, no less than five thousand slaves were annually exported, from this mart alone, to Rio Janeiro.

      It is indeed astonishing that a place so unhealthy in itself as Quillimane should be able to keep up its constant supply of human export. The soil and the very air are no less pestilential than the traffic which debases it; but the effects of the demand are felt far and wide, and, hundreds of miles in the interior, the slave hunt, as it may be called, is carried on; and the ramifications of this odious traffic spread themselves like the branches of the upas-tree, not merely poisoning all within its shade, but becoming more and more infectious as it branches out further from the root.

CHAPTER VII.

       Table of Contents

      All preparations being at length completed, on the morning of the 17th of August, just twenty days after having so providentially succeeded in reaching her port of refuge, the Nemesis was once more ready to continue her voyage.

      On the 22nd August, she passed near the group of Rocky Islands, called Bassa da India, which are situated nearly in the middle of the channel, and pursued her voyage under sail. Of course, her progress was slow against an adverse wind, and no little anxiety was felt by her captain, on account of the uncertainty of the compasses, and their discrepancy with each other. She arrived, however, safely at Mozambique on the afternoon of the 31st, without having had occasion to use her engines, except just to carry her into the anchorage.

      As she passed through the outer roads, she communicated with H.M. brig Acorn, Captain Adams, which was on the look-out for two slavers daily expected to arrive for cargoes; and, the better to entrap them, she had hoisted a sort of decoy-flag at her main, which she had already taken from one of the same description. While a short visit was being paid on board, a pilot had come off from the shore, to conduct the Nemesis into the inner harbour, where she was soon brought to within a quarter of a mile of the town. Little time, however, could be spared for the visit, but there was still some necessary work to be done on board, which could not be completed until the following day.

      As the errors of the compasses have been alluded to above, and seem to have occasioned very great anxiety upon this passage, it may be well to make some remarks about them again in this place. It will be remembered, that before leaving Liverpool a long series of experiments had been made, which were intended to provide means of counteracting the local action of the iron of the ship's hull upon the compasses. But no worse place can be imagined than a crowded dock for the purpose of carrying on experiments of such nicety. Disturbing causes were continually operating, and the accident she met with on her way to Portsmouth proved that the correctness of the compasses was very far from being satisfactory. The experiments which were afterwards made at Portsmouth were also very doubtful in their result, in all probability owing, as before explained, to the absence of the boxes of chain or broken iron, which are always used by Professor Airy. It may readily be imagined that the utmost anxiety was always felt on board the vessel on this account, particularly when near the land; and many a long and anxious night has been spent on deck, with frequently a leadsman upon each of the paddle-boxes, to take soundings, and one in the bowsprit besides.

      The large magnets, as originally placed in their positions, have never been moved, neither has the compass been changed in the slightest degree. But although they have greatly modified the errors, they have by no means sufficed to correct them. It has been always found the safest course not to put faith in the compasses at all; or rather, in this instance, observation showed that a compass, suspended in a box from a cross spar, at the height of ten or twelve feet above the head of the man at the helm, acted with much more accuracy than any other, and it was always the most relied on whenever it could be used.

      It is scarcely to be doubted that the vessel has often made a longer passage than she would have done had the compasses been correct; for, in bad weather, when observations of the celestial bodies could not be taken, she could scarcely have avoided making many errors in her course. But nowhere were these difficulties felt more anxiously than in this passage through the Mozambique Channel, where land could never be very far distant. The necessity for a constant good look-out, and for two or even three men in the chains, produced anxiety and fatigue in itself; while it was also necessary for the officers to have the advantage of taking the altitudes of the stars, whenever the night was clear enough, not only once, but many times during the night. The compasses not only differed from the true points, but differed also from each other; and particularly in the Mozambique Channel, it was observed that they differed more than elsewhere, without being influenced however by the rapid atmospheric changes which prevailed. The more the ship's course was directed towards the true pole, the less was the error of the compass; but gradually, as her course was changed towards the east or west, so did the errors and discrepancies of the compasses increase.

It is satisfactory to know that the same degree of difficulty was not experienced on board the other iron steamers which were sent out afterwards; and as the Nemesis was the first of her class that ever made the voyage, it is right here to record the difficulties she encountered under this head. Many an anxious watch has been spent on deck, trying to catch the altitude of particular stars as they emerged, for a moment, from the dense clouds or haze; and much of this kind of labour, so frequently repeated, would have been saved had her compasses been trustworthy.[9]

      It is now time to return to the anchorage at Mozambique, where we left the Nemesis. Of course as she passed the principal Portuguese fort, she fired a salute, which was returned, and immediately became the signal to the whole town that something uncommon was to be expected. The arrival of a large steamer was soon made known in every direction, and not only became a source of curiosity to all, but an object of great alarm to many. The first impression was that she was sent purposely to put an end to the slave-trade at that place, and the consternation became general; for the governor, of whom more will presently be said, at once encouraged this opinion, which he felt would strengthen his power, as it did his determination,

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