188 



THE NATIONAL GEOGRAPHIC MAGAZINE 



Photograph by Hugo Brehme 



MOUNT ORIZABA, MEXICO, UP WHOSE SLOPES MARCH THE TREE HOSTS FROM THE 



TROPICS TO THE ETERNAL SNOWS 



A hundred romances are concentrated in the story of the advance of the forest phalanxes 

 from the base to the summit of this matchless peak. 



Photograph by Vittcrio Sella 



CARRYING THE BATTLE INTO THE INHOSPITABLE HEIGHTS OE THE 

 RUSSIAN CAUCASUS 



