296 



POLAR PROBLEMS 



1908 



1909 



75% over 



1910 



12% 

 over, 



1914 



1916 



13% 

 over 



1918 



Fig. 9 — Rainfall areas in Australia above and below the average for the period 1908-1925 (from the 

 official records). The chief agricultural and pastoral areas are shown by stippling on the map for 1912 

 only, but they are the same for all the other years as well. 



