

THE CLIMATIC ZONES. 49 



This region comprises two belts of country, each 

 extending 15 from the Equator to the parallels of 

 Lat. 15 North and Lat. 15 South. 



2. THE GREAT BUSH COUNTRY (OR JUNGLE 

 REGION). 



This comprises two other belts, beginning at Lat. 15 

 N. and Lat. 15 S., and extending to the 25th parallels 

 of North and South Latitude. 



3. THE DESERT ZONE. 



Comprising two belts extending from the' 2 5th to the 

 3oth parallels. 



4. THE REGION OF THE GREAT PLAINS (THE 

 GREAT GRASS COUNTRY). 



Comprising two belts extending from the 3oth to the 

 5oth parallels. 



5. THE GREAT FOREST REGION OF THE TEM- 

 PERATE ZONE. 



Comprising two belts extending from the 5oth parallel 

 to the circumpolar circles (Lat. 66 3 2'). 



6. THE ARCTIC AND ANTARCTIC ZONES. 

 Extending from the circumpolar circles Lat. 66 32' 



North and South to the Poles. 



To these we must add k three additional sections, 

 relative to special regions, which occur at different parts 

 of the earth's surface throughout each of the six pairs 

 of climatic zones, viz. : 



THE GREAT MOUNTAIN REGIONS. 



THE GREAT RIVER SYSTEMS. 



THE GREAT TERRESTRIAL RESERVOIR : THE OCEAN. 



Each of these last-named important sub -divisions, 

 as we shall presently have occasion to show, exercises 

 a vast influence upon the whole expanse of the ter- 



VOL. I. 4 



