

ILLUSTRATIONS 



Paere. 

 Plate I. Denuded lands occupied by cactus deserts, near El Rancho, eastern 



Guatemala Frontispiece. 



II. Denudation and erosion at Cahabon, eastern Guatemala 26 



III. Mountain sides terraced for corn and wheat, district of Quezalte- 



nango, western Guatemala 26 



IV. Denuded mountains in eastern Guatemala partially reforested with 



scattering pines 26 



V. Valley in open pine forest with advancing growth of tropical trees, 



Cahabon district, eastern Guatemala 26 



VI. Tropical growth in a reforested valley like that shown in Plate V . . 26 

 VII. Denuded, fire-swept slopes above the valley of Salama, Guatemala, 



reforested with scattering pine - 26 



VIII. Fig. 1. — Pine forest and bunch-grass on the upper slopes of Vulcan 

 de Agua, Guatemala. Fig. 2. — Pine forest inside the rim of the 

 crater of Vulcan de Agua, Guatemala 26 



145 



6 



