The Pine of the Mountains. 



PART FIRST. 



CHAPTEK I. 



GENERAL VIEW OF THE GEOGRAPHICAL DISTRIBUTION OF 

 PLANTS ON THE SURFACE OF THE GLOBE. 



carpet of plants which covers the earth does 

 not present throughout its whole extent a unity 

 of character independent of locality ; on the contrary, 

 each climate has its own physiognomy, and certain 

 species seem to have a preference for certain countries. 

 Some delight in the burning soil of the tropics or de- 

 velope their profuse wealth of fruit and flowers in the 

 warm and damp forests of the equator ; others shun 

 the heat of the sun and prefer temperate zones or 

 even the lands of the North. It is this fact that 



