MEASURES FOR BARK. 



655 



every season, and neither purchaser nor seller can be certain 

 how much bark has been bought or sold. It may be suggested 

 that an average yield being maintained matters will adjust 

 themselves in a few years' time ; but on the whole the forest- 

 owner will lose, for generally as long as a purchaser is 

 uncertain of the amount of bark he will obtain, he will bid 

 below its proper value. This is, therefore, the most rough 

 and ready of all measurements. 



According to Baur, the average ratio of the bark in cwts. to 

 the peeled wood is as follows : One stacked cubic meter 

 (35 st. cub. ft.) of peeled wood will yield 



Silver-bark 0'91 cwt. 



Seconds T69 



16 years old stem bark . . . 1*45 



25 ,, ,, ,, . 1*95 



6. Yield of Bark-Coppice. 



Jentsch * has calculated the average yield per acre of bark- 

 coppice in West Germany for various rotations and qualities 

 of soil as follows in cwts. of bark : 



A. Bernhardt gives the following quantities of wood in solid 

 cubic feet per acre : 



* .Jcnlsch ' I)<T I )<>u(,srlir Kichcnsli-ihvald u. seine Zukunft. Berlin, 1899. 



