( 16 ) 



This, of course, is an approximate scale for tlie Eastern Himalaya and Khasya hills only, 

 but aa we proceed towards the equator, the corresponding regions become higher situated 

 in the same ratio, as the colder regions gradually descend towarck the poles, until zone and 

 region become united in the plains of the polar circle.* Besides this influence of geographi- 

 cal zones, exposure depresses and raises regions considerably. No attempt has as yet been 

 made to settle regions in India from a scientific point of view, and, therefore, such deter- 

 minations are only arbitrary and of very relative value. 



tropical 



Regions. 

 I . tropioBl. 

 n . ffuttrouical 

 m. aiibtemperate . 



IV . temperate 



V. aJpme. 



VI . g-lacial . 



NORTH-EAST QUARTER OF GLOBE SHEWING ZONES AND REGIONS. 



In the above section of the north-eastern portion of the globe, I have attempted to 

 give a rough graphic representation of tlie diflerent elevations of the principal regions in the 

 different northern latitudes, with special consideration of the Burmese mountains. As 

 regards the zones here adopted, I must refer to 5 in the sequel. 



The Martaban hills, and the hill ranges generally of the whole of Burma, extend only 

 into the subtemperate region (a few peaks in Arracan also into the temperate), and in these 

 regions also we have hoar frost in January. 



Dr. Grisebach's work " The Vegetation of the world in relation to climate" (2 vols.) reached me only 

 while these sheets were passing through the press, and I can, therefore, make no use of the valuable information 

 therein contained. 



