In the course of the afternoon, the soil became soft and marshy. It was evident that the travellers were crossing plains that in a long rainy season must be inundated. The ground was carpeted with luxuriant mosses and graceful ferns, and the continual appearance of brown hematite wherever there was a rise in the soil, betokened the existence of a rich vein of metal beneath.
Remembering what he had read in Dr. Livingstone’s account of these treacherous swamps, Dick bade his companions take their footing warily. He himself led the way. Tom expressed his surprise that the ground should be so soaked when there had been no rain for some time.
“I think we shall have a storm soon,” said Bat.
“All the more reason, then,” replied Dick, “why we should get away from these marshes as quickly as possible. Carry Jack again, Hercules; and you, Bat and Austin, keep close to Mrs. Weldon, so as to be able to assist her if she wants your help. But take care, take care, Mr. Benedict!” he cried out in sudden alarm; “what are you doing, sir?”
“I’m slipping in,” was poor Benedict’s helpless reply. He had trodden upon a kind of quagmire and, as though a trap had been opened beneath his feet, was fast disappearing into the slough. Assistance was immediately rendered, and the unfortunate naturalist was dragged out, covered with mud almost to his waist, but thoroughly satisfied because his precious box of specimens had suffered no injury. Actaeon undertook for the future to keep close to his side, and endeavour to avoid a repetition of the mishap.
The accident could not be said to be altogether free from unpleasant consequences. Air-bubbles in great numbers had risen to the surface of the mire from which Benedict had been extricated, and as they burst they disseminated an odious stench that was well-nigh intolerable. The passage of these pestilential districts is not unfrequently very dangerous, and Livingstone, who on several occasions waded through them in mud that reached to his breast, compares them to great sponges composed of black porous earth, in which every footstep causes streams of moisture to ooze out.
For well nigh half a mile they had now to wend their cautious way across this spongy soil. Mrs. Weldon, ankle-deep in the soft mud, was at last compelled to come to a standstill; and Hercules, Bat, and Austin, all resolved that she should be spared further discomfort, and insisted upon weaving some bamboos into a litter, upon which, after much reluctance to become such a burden, she was induced, with Jack beside her, to take her place.
After the delay thus caused, the procession again started on its perilous route. Dick Sands continued to walk at the head, in order to test the stability of the footing; Actaeon followed, holding Cousin Benedict firmly by the arm; Tom took charge of old Nan, who without his support would certainly have fallen into the quagmire; and the three other negroes carried the litter in the rear. It was a matter of the greatest difficulty to find a path that was sufficiently firm; the method they adopted was to pick their way as much as possible on the long rank grass that on the margin of the swamps was tolerably tough; but in spite of the greatest precaution, there was not one of them who escaped occasionally sinking up to his knees in slush.
At about five o’clock they were relieved by finding themselves on ground of a more clayey character; it was still soft and porous below, but its surface was hard enough to give a secure foothold. There were watery pores that percolated the subsoil, and these gave evident witness to the proximity of a river-district.
The heat would have been intolerably oppressive if it had not been tempered by some heavy storm-clouds which obstructed the direct influence of the sun’s rays. Lightning was observed to be playing faintly about the sky, and there was now and again the low growl of distant thunder. The indications of a gathering storm were too manifest to be disregarded, and Dick could not help being very uneasy. He had heard of the extreme violence of African storms, and knew that torrents of rain, hurricanes that no tree could resist, and thunderbolt after thunderbolt were the usual accompaniment of these tempests. And here in this lowland desert, which too surely would be completely inundated, there would not be a tree to which they could resort for shelter, while it would likewise be utterly vain to hope to obtain a refuge by excavation, as water would be found only two feet below the surface.
After scrutinizing the landscape, however, he noticed some low elevations on the north that seemed to form the boundary of the marshy plain. A few trees were scattered along their summits; if his party could get no other shelter here, he hoped they would be able to find themselves free from any danger caused by the rising flood.
“Push on, friends, push on!” he cried; “three miles more, and we shall be out of this treacherous lowland.”
His words served to inspire a fresh confidence, and in spite of all the