LARCH (vEXICE) turpentine 



277 



water and small amounts of suspended material ; it has a slightly bitter 

 taste and an agreeable terebinthic odor. The sample from the Fortine 

 district had a somewhat darker color than the samples for the other 

 two areas. 



The methods employed in the examination of the oleoresin are those 

 given in Forest Service Bulletin No. 119/- except that the specific 

 gravity of the oleoresin was determined by means of a pycnometer. 

 Table 2 gives the physical constants determined and the results of 

 steam distillation after the material was strained through cheesecloth 

 to remove chips. 



Table 2. 



Sample 



number 



Specific I Optical 



Volatile 

 oil per 



Resin 

 per cent 



Mois- 

 ture per 



Trash 

 per cent 



Blackfeet National 

 Forest, Fortine Dis- 

 trict 



Flathead National 

 Forest, Essex Dis- 

 trict 



I Missoula National 

 I Forest, Seeley Lake 

 [District 



Average 



1.0031 



-23.71 



1.0048 I —24.50 



-f 



1.0054 I —24.78 



81.2 



81.2 



81.2 



2.4 



2.8 



0.1 

 0.2 



0.2 



° 20 per cent alcoholic solution. 



Chemical constants on the same three samples were obtained as 

 follows : 



Table 3. 



^ "An Examination of the Oleoresins of Some Western Pines." by A. W. 

 Schorger. 



