CONTENTS 



Page 



INTRODUCTION 1 



METHODS 4 



RESULTS 5 



Weather Factors 5 



Needle Moisture 6 



Extractives 9 



Energy Content 11 



CONCLUSIONS AND DISCUSSION 14 



LITERATURE CITED 15 



APPENDIX 17 



ABSTRACT 



The moisture, ether extractive, and energy content of 

 ponderosa pine (Finns ponderosa Laws.) and Douglas-fir 

 (Pseudotsuga menziesii L. ) foliage were measured during 

 two fire seasons. The moisture content of 1- and 2-year-old 

 needles was found to rise throughout the summer. The ether 

 extractive content was highest in the fir foliage at the end of 

 summer when fire severity is generallj'^ thought to be highest. 

 Pine foliage extractive content was high throughout the sam- 

 ple period. The energy content of the extracted leaves and 

 the extractives varied through the summer. There may be a 

 relationship between the extractives and crown fire potential 

 in these species. 



