ABSTRACT
Man’s relations to his physical environment are of such vital importance that it is essential at the outset of this essay for the reader to be acquainted with the physiography and climatology of those regions over which the Eastern Libyans were anciently distributed. This is the more necessary because, on the one hand, the characteristics of Africa between Egypt and Tunisia are such as profoundly to influence the lives and habits of those dwelling in that area, and because, upon the other, the existing general descriptions of this region as a whole are unsatisfactory.
