OASIS IN THE SAHARA.
Oases differ in character. Sometimes they are mere patches, covered with bushes and coarse grass, usually surrounding a spring. More often they are tracts of rare beauty and of great fertility, with a good supply of water.
In traveling through the Great Desert, the easiest route is from Tripoli, through the kingdoms of Fezzan, to Lake Tchad. The kingdom of Fezzan is favored as to climate. It has periodical rains, on account of the moist winds which blow from the Mediterranean Sea. These seem to extend farther inland here than in any other part of the continent.
East of this route across the Sahara there is a portion of the desert called the Libyan Desert. Oases are, in this section, very easily cultivated. In the western section of the Sahara the land of the oases is fit only for pasturing goats and sheep.
In some of these more fertile oases of the eastern sections, thousands of inhabitants may be found living in comfortable villages. There may be found the date palm in cultivation, together with other fruits and some grains. Gum arabic is also a product of this region. It is obtained from the sap which exudes from the trunk of the acacia tree.
Commerce across the Great Desert is not carried on without difficulty and danger. There are various routes over which caravans of from five hundred to two thousand camels and their drivers travel.
The distance between the springs, or wells, is frequently more than a ten-days' journey. Often such a spring is reached only to be found dry, and then both the men and the animals are in danger of perishing for lack of water.
We, who are so accustomed to an abundance of fresh water, can scarcely realize how it would seem to travel with one of these caravans, and to be able to quench our thirst only from the supply of water carried in leather bags slung from the sides of the patient camels. A glass of water that has stood over night does not seem very palatable to us; yet, doubtless, it would seem refreshing compared with water that had been carried in a leather bag for ten days, exposed to the burning heat of the desert's sands and sun.
A wise Providence has fitted the camel with a special paunch, or stomach, the cells of which it fills with water before starting out on one of these journeys. This supply has to suffice for its needs until more water can be obtained from some distant spring. It has been stated that the cells of the camel's stomach can absorb and hold upwards of a gallon of water when the animal is preparing to start out upon one of its long journeys across the desert.
Should a caravan, in crossing the desert, reach a spring or well, the waters of which had run dry, perhaps the life of one of the camels would have to be sacrificed, in the hope of getting a supply of water from its stomach. This water would be all that the drivers would have with which to sustain life until another spring could be reached.