160 



Canadian Forestry Journal, August, ipij. 



What happens when hillsides are denuded of forests. 



Photographs taken in desolated parts of China. Top Pi^tHf^^^^h^.^^^^^^.^DiTrkt^ 



1= -Irjfcttf t;;-tiitvtria^^^^ - ¥oV 



^^-protofbTiiSn^erol^Sr-^G^S^^ S. Geological Sur- 

 vey, Washington, D. C. 



