HEIGHTS ON THE SOUTH POLAR PLATEAU. 



291 



By this method we find that the change of height in each half degree of latitude between 

 87" S. (3" Depot) and the South Pole to be as follows :— 



Table 15L 

 Okmje of ImgU in each half degree of latitude on the Polar Plateau along the 160" E. meridian. 



Ascent -j-) Descent -. 



Outward 

 Return . 

 Mean 



From this table we see that the height of the plateau increases to about 88|° S. and 

 then decreases to the Pole. The mean values have only to be added successively to the 

 height of 3° Depot, determined above, to give the height of the various positions on the 

 plateau. 



The following table gives the heights of the various points from Pony Depot to the Pole. 



Table 152. 



