The wearisome monotony of the woods, now generally stripped of their foliage, was enlivened by the fresh green of the Combretum, which here long anticipates every other tree in putting forth its tender buds. Gaily it stands apart from the uniform grey and brown of the surrounding forest, thrown into yet higher relief by the yellow of the mass of withered grass below, and showing itself brightly from the half-shaded gloom of the wood beyond.
Although I had now advanced an entire degree nearer to the Equator, being now in a latitude of 6° 20´ N., I still found that the landscape around had charms to offer which were not inferior to the winter beauties of the distant north. In the early morning I delighted to see the rimy dew that had fallen on the sprouting grass, and which frequently remained as late as nine o’clock; over the feathery Pennisetum and the Agrostideæ it fell like a white veil, and the bright drops sparkled like diamonds in the sunshine. The slender gossamer, moreover, which stretched itself over the deeps and shallows of the soil, and even over the footprints in the ground, appeared to operate as a conductor of the dew, which congealed till it was like a film of ice which crackles beneath the tread of a traveller in the autumn.
GREAT ANT-HILLS.
Distant four and a half leagues to the south lay Aboo Sammat’s head Seriba, known as Sabby, the name of its Bongo chief. Half-way upon our march we crossed a considerable stream, which was called the Koddy. As we forded its breadth of twenty feet, we found the water rising above our hips. Here again the candelabra-euphorbia seemed to be abundant, after having never been seen since I left the eastern bank of the river Dyoor. An essential feature of the district between the Dyoor and the Kohl is contributed by the small mushroom-shaped ant-hills which, found as they are in many a part of Tropical Africa, here cover the stony surface with their peculiar shapes. Formed exactly like the common mushroom, the separate erections of the Termes mordax are grouped in little colonies. The main difference between the tenements of these ants and those which construct conical domes as tall as a man, consists in this, that they have a definite altitude, which rarely exceeds thirty inches, and immediately that there is no further space they raise new turrets and form fresh colonies. The materials, too, of which this species of Termes constructs its edifice is neither grey nor of a ferruginous red, but is simply the alluvial clay of the place: it is so closely cemented together, that it defies the most violent kicking to displace it, and is hardly less solid than brickwork. The natives are very glad to employ it for the construction of their huts; they break it into fragments with their clubs, and moisten it till its substance yields. By the Bongo it is called Kiddillikoo.
Mushroom-shaped white-ant hills.
The red ferruginous clay is the only material out of which the great ants (Termes bellicosus) construct their buildings. These are seldom found elsewhere than in a wood, where the pointed shapes are never seen. The neighbourhood of Sabby especially abounded in these monuments of animal labour, and not a few of them were fifteen feet in height. In altitude greater than in breadth, they reared themselves like a large cupola surrounded by countless pillars and projecting towers. At the first commencement of the building it embraces only some isolated domes, which gradually are combined into one single cluster, whilst the ramifications of the interior have entirely to be reconstructed. When we reflect that the dimensions of the bodies of these toiling ants (the female neuters) are not one thousandth part so great as the structure that they upheave, we cannot refrain from comparing their edifices with the most extensive cities which human hands have reared. During my previous journey, I had found several opportunities of investigating the secret habits of these wondrous creatures. The life of the traveller in Africa is one continual conflict against their aggressions. Once at the missionary station in Gallabat, for seven days did the people work away with crowbars to remove one of these erections, which had been accumulated in the middle of the courtyard, and which was not only an impediment in the way, but was a nuisance to the adjacent huts. At length they penetrated to the royal chamber, and dragged forth the queen to the daylight, from which she had carefully excluded her subjects.
All the ant-hills of which I was able to make a survey were constructed upon the double-chamber system, the maze of cells being divided apparently into two separate storeys. Adequately to describe the marvellous interior of one of these haunts of the community would require a volume of itself. No labyrinth of coral could be more intricate; its walls are curiously cemented together, its chambers are most carefully arranged and most amply stored with vegetable produce, and there are magazines which teem with cakes and loaves. A regular series of bridges conducts from place to place, and many a crossway traverses the pile. To detail the wonders of these erections would tax the patience of the reader, and the study of a life-time would not exhaust the marvellous perfection of the organization which they present.
ABOO SAMMAT’S HEAD SERIBA.