104 



OUR VANISHING FORESTS 



yet been established. But although an airplane 

 travels rapidly and covers great distances, it can 

 sustain flight for only a few hours, and is therefore 

 less effective than a permanent look-out. A few 

 airplane manufacturers have attempted to develop 



Aerial forest patrol is a valuable weapon against the forest fire demon. 



for use in fire fighting a special machine large enough 

 to carry to the scene several men and their appar- 

 atus. Occasional tests have shown that these planes 

 are useful in lake or water covered regions where 

 good landing places are available, but many inland 

 forests offer no such advantage. 



