CONTENTS 



Page 

 No. 



The forest survey in Montana 2 



Forest land 3 



Timber volume 4 



Lodgepole pine in the Northern Rockies 5 



Ponderosa pine saw timber in the semiarid type 6 



Cottonwood in stream bottom stringer type 7 



Statistical data bv county 



Table 1. Forest land area 8 



Table 2. Timber volume 9 



Standard statistical data for unit 



Table 3. Land area bv major use 10 



Table 4. Forest land area bv economic class 10 



Table 5. Commercial forest land b^ species group and 



stand-size class 11 



Table 6. Board-foot volume on commercial forest land 



bv species 12 



Table 7. Cubic-foot volume on commercial forest land 



by species 13 



Table 8. Board- foot volume on commercial forest land 



by stand-size class and diameter group 14 



Table 9. Cubic-foot volume on commercial forest land 



bv stand-size class and diameter group 14 



Table 10. Cubic-foot volume on commercial forest land by 



species group, tree size, and class of material . . 15 



Table 11. Average volume per acre by stand-size class .... 15 



Definitions 16 



Forest survey method 17 



Accuracy of the data 18 



List of forest survey reports for Montana 20 



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