20 



BULLETIX 8 6 3, r. S. DEPARTMENT OE AGBICULTTTBE 



Illustrative material. — Pictures of forest fires, burnt over wood- 

 lands, forest rangers, their camps and equipment, copies of the 

 United States Forest Regulations, and charts for fire prevention 

 will make excellent illustrative material. Pictures of trees damaged 

 by insects or fungi, samples of damaged wood, samples of insecti- 

 cides and materials used to prevent insects from damaging trees 

 should also be used. 



Guides to study. — Fire, the arch enemy of the forest : It kills large 

 numbers of the smaller trees and kills or weakens the vitality of the 

 older trees; the humus layers over the ground are destroyed. The 



\ 







i;%-_ 



n 





1 \ fBM| 





- : > """- - - - b~~- 





FlGUEE 12 



-Planting a pine forest on worn-out and idle farm land, 

 grazing should be excluded 



Fire and 



loss of the protective covering exerts a marked effect in causing the 

 soil to dry out and become hard as a result of which the rain is shed 

 off rapidly following dry weather, much as when it falls on a house 

 roof. Trees in farm woodlands and city parks are often seen drying 

 at the tops, most usually from this cause. 



HELP 



PREVENT WOODS FIRES 



BE SURE your match is out before throwing it away. 



DON'T throw away burning tobacco. 



CHOOSE a safe place and make your camp fire small. 



PUT OUT your fire with water and then cover it with 

 earth. 



DON'T make large brush heaps. Choose a still day for 

 burning and plow furrows to protect near-by woods. 



BE CAREFUL WITH FIRE 



