282 JOURNAL OF FORESTRY 



and more nearly approach the values for the oleoresin from L. decidiia 

 than do the results obtained by Schorger on Douglas fir turpentine 

 (Oregon fir balsam). 



Two properties make Venice turpentine of value for particular pur- 

 poses : it does not readily become hard on exposure ; and, after stand- 

 ing, crystals do not form in it. The oleoresin from western larch 

 possesses these properties, and tests made by a commercial firm indicate 

 that western larch turpentine is a satisfactory material for all those 

 industrial purposes for which Venice turpentine is ordinarily used. 



