﻿THE 
  MERCHANTABLE 
  FOREST. 
  

  

  17 
  

  

  The 
  number 
  of 
  trees 
  per 
  acre 
  below 
  22 
  inches 
  in 
  diameter 
  is 
  dispro- 
  

   portionately 
  small, 
  as 
  Mas 
  shown 
  by 
  figure 
  1, 
  which 
  is 
  a 
  graphic 
  rep- 
  

   resentation 
  of 
  this 
  table. 
  The 
  trees 
  now 
  approaching 
  merchantable 
  

   size 
  are 
  not 
  sufficient 
  in 
  number 
  to 
  maintain 
  the 
  present 
  proportion 
  of 
  

   mature 
  timber. 
  This 
  has 
  a 
  serious 
  influence 
  on 
  future 
  yields, 
  since 
  it 
  

   lengthens 
  considerably 
  the 
  time 
  required 
  for 
  the 
  production 
  of 
  a 
  sec- 
  

   ond 
  crop 
  equal 
  to 
  the 
  present 
  one. 
  and 
  it 
  shows, 
  moreover, 
  that 
  the 
  

   land 
  is 
  capable 
  of 
  producing 
  a 
  much 
  larger 
  stand 
  of 
  timber 
  than 
  it 
  is 
  

   now 
  maturing. 
  

  

  The 
  following 
  table 
  gives 
  the 
  average 
  contents 
  of 
  standing 
  pine 
  in 
  

   board 
  feet, 
  by 
  Doyle's 
  Rule, 
  on 
  a 
  basis 
  of 
  diameter 
  at 
  breastheight. 
  

   and 
  holds 
  good 
  for 
  both 
  Shortleaf 
  and 
  Loblolly 
  Pine. 
  Figure 
  3 
  is 
  a 
  

   graphic 
  representation 
  of 
  this 
  table. 
  

  

  Table 
  No. 
  3. 
  — 
  Contorts 
  of 
  pine, 
  in 
  board 
  feet, 
  according 
  to 
  diameter 
  breaxthigh. 
  

  

  [By 
  Doyle's 
  Rule.] 
  

  

  Diameter 
  

   breast- 
  

   high. 
  

  

  Merchant- 
  

   able 
  con- 
  

   tents. 
  

  

  Diameter 
  

   breast- 
  

   high. 
  

  

  Merchant- 
  

   able 
  con- 
  

   tents. 
  

  

  Diameter 
  

   breast- 
  

   high. 
  

  

  Merchant- 
  

   able 
  con- 
  

   tents. 
  

  

  Inchee. 
  

  

  Board 
  feet. 
  

  

  Inches. 
  

  

  Board 
  feet. 
  

  

  Inches'. 
  

  

  Board 
  feet. 
  

  

  15 
  

  

  120 
  

  

  24 
  

  

  780 
  

  

  33 
  

  

  1.800 
  

  

  16 
  

  

  180 
  

  

  25 
  

  

  880 
  

  

  34 
  

  

  1.930 
  

  

  17 
  

  

  240 
  

  

  26 
  

  

  980 
  

  

  

  2,060 
  

  

  18 
  

  

  300 
  

  

  27 
  

  

  i.oso 
  

  

  36 
  

  

  2.200 
  

  

  19 
  

  

  370 
  

  

  28 
  

  

  1.190 
  

  

  37 
  

  

  2.340 
  

  

  20 
  

  

  440 
  

  

  29 
  

  

  1.300 
  

  

  38 
  

  

  2.490 
  

  

  21 
  

  

  520 
  • 
  

  

  30 
  

  

  1.420 
  

  

  39 
  

  

  2,630 
  

  

  22 
  

  

  600 
  

  

  

  1.550 
  

  

  40 
  

  

  2. 
  780 
  

  

  23 
  

  

  690 
  

  

  32 
  

  

  1,680 
  

  

  

  

  STAND 
  OF 
  MERCHANTABLE 
  PINK. 
  

  

  The 
  following 
  table 
  shows 
  the 
  average 
  stand 
  per 
  acre 
  in 
  board 
  feet 
  

   of 
  merchantable 
  pine 
  on 
  the 
  pine 
  lands, 
  cutting 
  to 
  various 
  diameter-: 
  

  

  Table 
  No. 
  4. 
  — 
  Average 
  stand 
  of 
  merchantable 
  pine 
  per 
  acre, 
  in 
  board 
  feet, 
  cutting 
  to 
  

   diameter 
  limits 
  of 
  12, 
  14, 
  16, 
  18, 
  and 
  20 
  inches, 
  breasthigh. 
  

  

  Cutting 
  

  

  limit, 
  

   diameter 
  

   breasthigh. 
  

  

  Average 
  

   merchant- 
  

   able 
  stand 
  

  

  per 
  acre. 
  

  

  Inehet. 
  

  

  Board 
  feet. 
  

  

  12 
  

  

  6.067 
  

  

  14 
  

  

  5,845 
  

  

  16 
  

  

  5.597 
  

  

  IS 
  

  

  5, 
  130 
  

  

  20 
  

  

  4.561 
  

  

  22019— 
  No. 
  32—02 
  2 
  

  

  