314 
PACIFIC SCIENCE, VoL III, October, 1949 
minerals to the free oxides; (b) an increase in 
the alumina content with increase in rainfall; 
(c) decrease in the content of silica and iron 
oxide with increase in rainfall; and (d) the 
ultimate end-product of soil weathering will be 
an "aluminum oxide laterite,” probably a "baux- 
ite laterite.” 
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