... tree bearing yellowish red berries full of viscous juice like green gum,—edible but not nice,—and the brighter vegetation showed that water was near the surface. About two hours afterwards, as the sun became oppressive, we unloaded in a water-course, called by my companions Adad or the Acacia Gum [42]: the distance was about twenty-five miles, and the direction S. W. 225o ... — First footsteps in East Africa • Richard F. Burton
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