22 BULLETIN 1003, XT. S. DEPARTMENT OF AGRICULTURE. 



are fire scarred. The values on these samples given in Table 14 are, 

 therefore, only estimates. 



SUMMARY. 



Northern Idaho : 



Rich stumpwood, Priest River. 

 Potlatch-Deary Region : 



Rich stumpwood, Viola. 



Dead, down limbs, Viola. 



Fire-scarred butt, Viola. 



Poor stumpwood, Deary. 



Rich stumpwood, Deary. 



Medium stumpwood, Deary. 



Dead, down limbs, Deary. 



Rich stumpwood, Potlatch (three large stumps). 



Medium to rich stumpwood, Potlatch (from stumps other than the three 

 large, rich stumps). 

 Coeur d'Alene Region: 



Rich stumpwood, Coeur d'Aleue Lake. 



Medium stumpwood, Hayden Lake. 

 South Idaho, Boise Region: 



Bull-pine stumpwood, Boise. 



Medium stumpwood, Boise. 



Rich stumpwood, Boise. 



Green selected stumpwood, Boise. 

 Craig Mountain Region: 



Selected green stumpwood, Craig Mountain. 



Rich roadside stumpwood, Craig Mountain. 



Medium stumpwood, Craig Mountain. 



Rich, cut-over stumpwood, Craig Mountain. 



Dead, down limbs, etc., Craig Mountain. 



Dead tops, limbs, etc., Craig Mountain. 



Green tops, limbs, etc., Craig Mountain. 

 Moscow : 



Tamarack stumpwood. 



DISTILLATION OF SAMPLES. 



PREPARATION. 



The wood as delivered was sawed in lengths that would fit into 

 a pile of cord dimensions and split into pieces approximately 2 

 to 4 inches in diameter. It was then thrown into a heap, repiled 

 a sufficient number of times to render it uniform in quality, corded, 

 taking care to pack closely, and left standing, protected from the 

 weather, until run. The entire sample thus prepared was weighed 

 on a portable platform scale immediately before the distillation, 

 and the weight calculated from its measured dimensions. In mak- 

 ing these weighings 3 separate portions, usually of 175 pounds each, 

 were taken from throughout the entire pile in such manner as to 

 make sure that each sample was truly representative of the original 

 field sample. 



When a cord of wood is split into smaller pieces and again corded 

 its volume is increased because of the greater proportion of voids 



