GROWTH. 



23 



Table 7 gives the number of mine props which can be cut from trees 

 of different heights and diameters. 



TABLE 7. Second-growth yellow poplar. Volume table for mine props 

 from trees of different heights and diameters. 



Height Feet 



40 50 GO 70 80 90 



Number of sections 5 ft. long and more than 

 5 in. inside bark .at top 

 2 



Diameter 

 breast-high 



Inches 

 5 

 G 



7 



10 

 11 



5 

 G 

 7 

 8 

 9 



10 

 11 

 12 



o 

 G 

 7 

 8 

 9 



10 

 11 



5 

 G 

 7 

 8 

 9 



10 

 11 

 12 



9 



10 

 10 



10 



Number of sections 5 ft. long and more than 

 7 in. inside bark at top 



Number of sections 7 ft. long and more than 

 5 in. inside bark at top 

 1 



Number of sections 7 ft. long and more than 

 7 in. inside bark at top 



100 



Yield. Throughout Tennessee, in old pastures and in hollows on cut- 

 over land, there are stands of second growth poplars. These are some- 

 times pure, consisting only of poplars, but as a rule contain varying pro- 

 portions of other species, which are chiefly pine, oak, locust, and chestnut. 

 Yield tables show the probable volume per acre of such stands at differ- 

 ent ages, as well as the possibilities of plantations. 



