Kitap 17
3.23
Above these parts is the district which produces silphium, then follows the uninhabited tract, and the country of the Garamantes. The district which produces silphium is narrow, long, and dry, extending in an easterly direction about 1000 stadia, but in breadth 300 stadia, or rather more, at least as far as has been ascertained. For we may conjecture that all countries which lie on the same parallel (of latitude) have the same climate, and produce the same plants; but since many deserts intervene, we cannot know every place. In like manner, we have no information respecting the country beyond (the temple of) Ammon, nor of the oases, as far as Ethiopia, nor can we state distinctly what are the boundaries of Ethiopia, nor of Africa, nor even of the country close upon Egypt, still less of the parts bordering on the ocean.