70 



FOREST PRODUCTS 



The following table shows the number of cords of hemlock bark per 

 looo bd. ft. for trees of different diameters in the southern Appalachian 

 mountains. The Doyle-Scribner rule was used.^ 



NUMBER OF CORDS OF BARK FOR TREES OF DIFFERENT DIAMETERS 



The following table shows the volume of hemlock bark in stacked 

 cords, for trees of various diameters.^ 



VOLUME OF HEMLOCK BARK IN CORDS FOR TREES OF DIAMETERS 

 FROM 8 TO 29 INCHES 



PRODUCTION OF CHESTNUT OAK BARK 



The oaks have always held a very prominent position as a source of 

 high-grade tanning materials because of the excellent nature of the 

 effect on various skins. Oak bark is especially esteemed for sole leathers. 

 The bark of chestnut oak is not only used directly in tanneries, but is 

 also widely employed for making tannin extract. The two tannin- 

 producing oaks are the chestnut oak and tanbark oak. The former is 



' From data secured by Walter Mulford, 1905-1906. 

 ' From " Hemlock in Vermont," by A. F. Hawes. 



