MY <>U NOIM'II ( A!tii|.I.\A l'l\ I.. 



TABLB 18. DUMKTER GROWTH or Lom> . - I\-H.I. mi BAHK ON 



ro ] MI. .11. 



GROWTH IN Vof.r.MK. 



Cubic Feet. 



A- both height and diameter growth of loblolly pine are most rapid in 

 early youth, the greatest per cent of volume increment is made during 

 tin- period. The contents in cubic feet of the stem of a tree without 

 bark or branches, at different ages, is the best index of the rate of growth 

 in total volume. The growth of the stem of the trees of loblolly pine in 

 cubic feet in different quality classes is given in Table 19. The growth 

 in cubic feet of trees in stands on different sites is given in Table 20. 



Board Feet. 



The volume iii board feet increases at a more rapid rate than the 

 volume in cubic feet on account of the greater proportion of convertible 

 ial in timber of large diameter than in small. The volume in 

 ho;ird feet of the dominant trees in stands at different ages is given in 

 Table '1 1 by I )oyle-Scribner rule, and on the ba-i< of actual mill cut 

 1-7 inch saw kerf band awed. The volume of trees ,,n different sites 

 at gn '-given in Table -1~1. It i- probable that the' rapid increase 



