-3- 



Strength in Vrood is important whothcf the wood is to be used for 

 airplane.- wings or floor joists. 



1 p'l' 



ijut spacing and thinning kve not the only way to influence the 

 size of that layer of summer wood in the tree ring. Another help is to 

 keep fires out of the- voads. It is said that prevention of forest fires 

 in southern pines would stop the destruction of a lot of forest litter 

 which in rotting would otherwise add nutrients to the soil. Litter also 

 holds moisture. That food and drink should help the trees grov^ faster. 



In their studies, the U. S. foresters have found that trees on good 

 sites keep on producing good, heavy, strong wood in quantity when trees 

 on ver;/ poor ground produced much weaker wood and a lesser quantity. 



BsLck in the old days, the main idea was to get the land cleared 

 so we could put it to the plow. We had plenty of all kinds of woods — and 



we used them — Eow we did use them.' ITowdays, we are beginning to 



look at wood as a crop, like any other crop, except that it takes longer 

 for it to mature, T7e are finding that we must be more careful how vie use 

 wood. Tie are also finding how to grow wood to fit the uses we have for 

 it. 



AiniO lUTCE' SITT : The program you have just listened to is one of a series 

 of visits with Uncle Sam's Natural is ts". One of those talks is presented 



every other Friday by this Station in cooperation with the United 



States Department of Agriculture. 



