IDEAL SECTION ACROSS SOUTH CENTRAL AFRICA, 



INTENDED TO SHOW THE ELEVATED VALLEY FORM OP THAT PORTION OP THE CONTINENT. 



The heights are given as an approximation obtained from observing the boiling point of water , they are drawn on a scalo of ^ of an inch per 1001.) feet in altitude. 

 The section is necessarily exaggerated in longitude, as it was traversed in different latitudes , the western side being in 8 3 — 12 \ the eastern 15°— 1&> S. 



