J9o8 MILI.lt >.\S !'( >k TRIBUTE; \< >THING F< >k DEFENSE 95 



and small boulder-, fallen tree trunks. the dead trunk- of former trees, 



and debris from the tree- above, with These all tend to moderate the How of 



the banks held by fern root- and roots the water and di--i|>ate it. 

 of bushes, checking, in a lar-e meas- \<>\v go on the tract that ha- been 



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ure, the rush of the water. ( >n the 

 adjacent hillside- are the tree-, who-, 

 foliage break- the force of the rainfall. 

 On the ground are the bn-he-. fern-. 

 and dead branches and IM\V and then 



lumbered over and then burned. There 

 your ravine bottom- are the -ame. all 

 but the bu-he- and fern- on the banks, 

 but u]> on the hillside- are furrows 

 by the d '/en : and the deeper and 



