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Twenty-two percent is used as fuel. Thirty-five percent is 
not used at all. 
This waste includes tops and limbs of trees, cull logs and 
other material left in the woods after cutting; sawdust, slabs, 
and edgings at the sawmills; material lost in pulping liquors, 
and other wastage in the manufacture of wood products. 
Whatever we can do to reduce this enormous wastage will 
help us get more useful things from trees without increasing 
the drain on the forests. Both Government and industry are 
working on the problem—trying to find new techniques for 
harvesting wood and processing it with less waste, and eco- 
nomical ways of using material now wasted. 
But waste reduction will not of itself solve the problem of 
timber supply. Many needed forest products, such as good- 
quality lumber, veneer, poles, and piling, cannot be made 
from low-grade or small-size waste. We shall have to grow 
the timber for these products. In fact, timber has to be 
grown even before it can be wasted! 
8. If wood gets too scarce, won’t there be other mate- 
rials to take its place? 
Growing scarcity of timber may force some use of substi- 
tute materials. And new products undoubtedly will come 
along to displace wood in some of its present uses. That has 
been happening for centuries. Yet as old traditional uses of 
wood faded out of the picture, new uses developed. Demand 
for wood pulp and paper products, for instance, has increased 
tremendously in recent years. 
