6 TEXT FIGURES. 



TEXT FIGURES. 



PAGE 

 Fig. 1. The relation of age to outward appearances 30 



Fig. 2. A diagram obtained directly from Fig. 1 31 



Fig. 3. A diagram based upon the per cent of identifications of "bull pine" 

 (immature) and typical yellow pine (mature) occurring at dif- 

 ferent ages, and obtained directly from Fig. 2 31 



Figs. 4 and 5. Curves showing average values for clear length, merchantable 

 length, and total height of immature and mature tvestern yellow 

 pine trees of different diameters breasthigh 32 



Fig. 6. Curves showing average diameter inside bark at small end of last 

 log used from immature and mature western yellow pine trees of 

 different diameters breasthigh . 34 



Fig. 7. Curves showing average values for twice thickness of bark at th* top 



of 16' butt logs from mature western yellow pine trees 34 



Figs. 8 to 13 inc. Curves showing average values for total volume in board feet, 

 also in cubic feet, contained in merchantable portion of immature 

 and mature western yellow pine trees of different diameters 

 breasthigh 3R 



Figs. 14 to 53 inc. Curves showing average volume in board feet of each grade 

 actually "sawed out" at mill, from merchantable portion of imma- 

 ture and mature western yellow pine trees of different diameters 

 breasthigh 40 



Figs. 54 to 59 inc. Grades sawed from immature and mature trees of different 



diameters breasthigh, expressed in per cent of total sawed out 56 



Figs. 60 and 61. A comparison of high, intermediate and low grade curves which 

 show the total per cent sawed out of each grade, from immature 

 and mature trees of different diameters breasthigh 58 



Figs. 62 to 67 inc. Value of grades sawed from immature and mature trees of 



different diameters breasthigh, expressed in dollars and cents 60 



Figs. 68 to 73 inc. Curves showing average value per tree and per 1,000 board 



feet for immature and mature western yellow pine 62 



Figs. 74 to 79 inc. Contoured curves showing average volume in board feet, also 

 in cubic feet, contained in merchantable portion of immature and 

 mature western yellow pine trees of different merchantable lengths 

 and diameters breasthigh 66 



Fig. 80. Curves showing average age in years of immature and mature western 



yellow pine trees of different diameters breasthigh 75 



Figs. 81 and 82. Curves showing relation of diameter inside bark of stump and 

 diameter breasthigh of immature and mature western yellow pine 

 trees 76 



Figs. 83 to 94 inc. Curves showing the rate of growth per decade in diameter 

 breasthigh, in volume, and in value of immature and mature 

 western yellow pine trees of different diameters breasthigh 78 



