276 



ZONES AND REGIONS [Pt. Ill, Sect. I 



Tropical Xerophilous Woodland Climate. 



THE SERTAO. 

 (After Draenert in Meteorol. Zeitschr., 1S86, p. 390, and 1889, p. 28.) 



5. CLIMATE OF NORTHERN SOUTH AMERICA AND OF 



THE ANTILLES. 

 Between the richly forested districts of the Amazon basin and of the 

 southern part of the Orinoco basin lies the small savannah district of 

 Guiana, regarding the climate of which there are no data. North of the 

 Orinoco, up to the wooded mountainous coasts of the Caribbean Sea, 

 stretches the wide prairie district of the llanos, usually a typical savannah, 

 in some places with very scattered trees, in others with more densely 

 crowded trees. According to my own observations, high-forest occurs 

 as fringing-forest along the water-courses ; savannah-forest occurs at the 

 foot of the Cordilleras on the coast, pari passu with an increasing rainfall, 



