Apr I, 1925 
The Construction of Taper Curves 
623 
H 
150 
140 
130 
120 
- 110 
100 
90 
H so 
70 
60 
- 50 
40 
30 
20 
- 10 
- 09 
- 08 
- 07 
- 06 
-*05 
Fig. 10.—Alignment chart for solution of equation of a parabola 
L>2 = 
D = Diameter of point H feet from top of tree. 
II = Distance from top of tree to point where 
D is taken. 
P — Parometer. Constant in trees of same 
size and form. 
R = Exponent. Constant in trees of same 
form,. 
FQ = Form quotient D of point halfway be¬ 
tween B. H. and top 4- D B H. Constant 
in trees of same form. 
