PART IV. TIMBER ESTIMATING 
Section I. Introduction . 161 
Section II. Instrumental Helps . 162 
Section III. Height Measurement . 165 
Section IV. Volume Tables and Tree Form . . . 167 
Section V. Practice of Timber Estimating ... 173 
A. Small and Valuable Tracts. 174 
B. Larger and Less Valuable Tracts. 186 
1. Type and Plot System. 187 
2. The Strip System. 188 
3. Line and Plot System. 192 
C. Summary. 195 
D. Pacific Coast Methods. 196 
