The farthest habitable spot to the south of Nejd is the Wadi Yabrin.
There was no prince greater or more formidable in the habitable globe.
The conception of an encompassing ocean bounding the habitable world is found in the creation myths of the most ancient civilizations.
The Ionian geographers looked on the circular disk of the habitable world as surrounded by a mighty stream named Oceanus, the name of the primeval god, father of gods and men, and thus the bond of union between heaven and earth.
Probably the polar regions alone do not fall within the category of the potentially productive, as even sandy and alkaline desert is rendered habitable where irrigation can be introduced; and vast tracts of fertile soil adapted for immediate exploitation, especially in the temperate zones, both north and south, only remain unpeopled because they are not yet wanted for colonization.