I took with me a good stock of cotton cloth, fresh supplies of ammunition and beads, and gave each of my men a musket.  As my companions had amassed considerable quantities of goods, they were unable to carry mine, but the bishop furnished me with twenty carriers, and sent forward orders to all the commandants of the districts through which we were to pass to render me every assistance in their power.  Being now supplied with a good new tent made by my friends on board the Philomel, we left Loanda on the 20th of September, 1854, and passed round by sea to the mouth of the River Bengo.  Ascending this river, we went through the district in which stand the ruins of the convent of St. Antonio; thence into Icollo i Bengo, which contains a population of 6530 blacks, 172 mulattoes, and 11 whites, and is so named from having been the residence of a former native king.  The proportion of slaves is only 3.38 per cent. of the inhabitants.  The commandant of this place, Laurence Jose Marquis, is a frank old soldier and a most hospitable man; he is one of the few who secure the universal approbation of their fellow-men for stern, unflinching honesty, and has risen from the ranks to be a major in the army.  We were accompanied thus far by our generous host, Edmund Gabriel, Esq., who, by his unwearied attentions to myself, and liberality in supporting my men, had become endeared to all our hearts.  My men were strongly impressed with a sense of his goodness, and often spoke of him in terms of admiration all the way to Linyanti.

While here we visited a large sugar manufactory belonging to a lady, Donna Anna da Sousa.  The flat alluvial lands on the banks of the Senza or Bengo are well adapted for raising sugar-cane, and this lady had a surprising number of slaves, but somehow the establishment was far from being in a flourishing condition.  It presented such a contrast to the free-labor establishments of the Mauritius, which I have since seen, where, with not one tenth of the number of hands, or such good soil, a man of color had, in one year, cleared 5000 Pounds by a single crop, that I quote the fact, in hopes it may meet the eye of Donna Anna.

The water of the river is muddy, and it is observed that such rivers have many more mosquitoes than those which have clear water.  It was remarked to us here that these insects are much more numerous at the period of new moon than at other times; at any rate, we were all thankful to get away from the Senza and its insect plagues.

The whole of this part of the country is composed of marly tufa, containing the same kind of shells as those at present alive in the seas.  As we advanced eastward and ascended the higher lands, we found eruptive trap, which had tilted up immense masses of mica and sandstone schists.  The mica schist almost always dipped toward the interior of the country, forming those mountain ranges of which we have already spoken as giving a highland character to the district