xm 



to give absolute percentages. But the subjoined table, 

 which may be taken as approximately accurate, will, it is 

 hoped, be useful both in itself and for comparison with 

 Mr. Baker's table, which remains of great historical 

 interest : — 



Arctic Zone ... 



Europe 



Temperate Asia, including the 

 Himalayas above 8,000 ft. 



North Africa, Canary Is. ... 



Temperate X. America 



Temperate S. Africa 



Australia and New Zealand 



Polynesia ... ... 



Temperate S. America 



Tropical Africa and Mascarene Is. 15*2 



Tropical Asia ... ... ... 84-8 



Tropical America ... 46 - 4 



Kew. March, 1906. 



D. P. 



23941 



