GEOGRAPHY'S CONTRIBUTION 213 
z 
Figure 8. Agricultural pattern on summit of Serra do Meruéca, 
western Ceara. 
ME PE ana ee 
Figure g. An aspect appearance of the caatinga during the dry season. 
(Figure 10), they have been ravaged by accelerated soil erosion. 
Having destroyed the natural conditions which permitted ample 
water storage, man has not replaced them by appropriate mechan- 
ical and vegetative controls. Not only is soil impoverished but 
