8500 



8000 



O 



H 



diff. 



MAY 



JUNE 



JULY 



AUG. 



SEPT. 



Figure IS, — The energy content of Douglas-fir needles j extracted 

 needlesj and ^diff during the 1968 fire season. 



Figure 14. — The energy content of Doug las -fir needles ^ extracted 

 needlesj and H^-ryr. during the 1969 fire season. 



