The Lake discharges its water north-westward or rather nor-north-westwards. We observe weeds going in that direction, and as the Lonzua, the Kowe, the Kapata, the Luaze, the Kalambwe, flow into it near the east end, and the Lovu or Lofubu, or Lofu, from the south-west near the end it must find an exit for so much water. All these rivers rise in or near the Mambwe country, in lat. 10 deg. S., where, too, the Chambeze rises. Liemba is said to remain of about the same size as we go north-west, but this we shall see for ourselves. Elephants come all about us. One was breaking trees close by. I fired into his ear without effect: I am too weak to hold the gun steadily. _30th April, 1867._--We begin our return march from Liemba. Slept at a village on the Lake, and went on next day to Pambete, where we first touched it. I notice that here the people pound tobacco-leaves in a mortar after they have undergone partial fermentation by lying in the sun, then they put the mass in the sun to dry for use. The reason why no palm-oil trees grow further east than Pambete is said to be the stony soil there, and this seems a valid one, for it loves rich loamy meadows. _1st May, 1867._--We intended to go north-west to see whether this Lake narrows or not, for all assert that it maintains its breadth such as we see it beyond Pemba as far as they know it; but when about to start the headman and his wife came and protested so solemnly that by going N.W. we should walk into the hands of a party of Mazitu there, that we deferred our departure. It was not with a full persuasion of the truth of the statement that I consented, but we afterwards saw good evidence that it was true, and that we were saved from being plundered. These marauders have changed their tactics, for they demand so many people, and so many cloths, and then leave. They made it known that their next scene of mulcting would be Mombo's village, and there they took twelve people--four slaves, and many cloths, then went south to the hills they inhabit. A strict watch was kept on their movements by our headman and his men. They trust to fleeing into a thicket on the west of the village should the Mazitu come. I have been informed on good authority that Kasonso was on his way to us when news arrived that his young son had died. He had sent on beer and provisions for us, but the Mazitu intervening they were consumed. The Mazitu having left we departed and slept half-way up the ridge. I had another fit of insensibility last night: the muscles of the back lose all power,[52] and there is constant singing in the ears, and inability to do the simplest sum. Cross the Aeeze (which makes the waterfall) fifteen yards wide and knee deep. The streams like this are almost innumerable.