90 FOREST COMMISSIONER'S REPORT. 



In the butt log Ij =13.7 ft. di = 13in. Tj =8 mm. or 2yi = .Gin. 

 cJ J = 13 in. Area circle from table = 132.7 sq. iu. 

 di— 2yi = r2 4in. " " " " =120.8 



Ai = 11.9 sq. in. 



In second log 12 = 18.3 ft. dg = 10.!) iu. y^ =!) mm. or 2y2=7 in. 

 d2=10.9. Area = 93.3 

 d2-2yj = 10.2. " =81.7 



Ao = 11.6 sq. in. 



da =9.4 i: 

 da = 9.4. Area =69.4 

 dj— 2y3=8.5. " =56.7 



Aj = 12.7 sq. in. 



1^ = 10 ft. d4^4in. y4 = 10mm. 2y4 = 8in. y here derived from estimate. 

 d4=4in. Area ^12.6 

 d4-2y<i=3.2. " = 8. 



A4 ^ 4.6 sq. in. 



Ai=11.9 sq. in. log Ai = 1.0755 

 1, = 13. 7 ft. log li= 1.1367 



Reduce to feet by colog 144 = 3.8416 



logVi=0.053S Vi = 1.13cu.ft. 



A, = 11.9 J (Ai + A2)=11.7 I log = 1.0682 

 A2=11.6 log 12=1.2625 



23.5 colog 144 =3.8416 



logV2=0.1723 V2 = l-49 



A J = 11.6 ^ (A J + A3) =12.2 I log = 1.0864 

 A3 = 12.7 log 13=1.1987 



24.3 colog 144 = 3.8416 



log V3 = 0.1267 V, =1.34 



A3=12.7 iA3 + A4)=S.7 log = 0.9395 



A4= 4.6 log 1^ = 1 



17.3 colog 144 = 3.8416 



1.7811 Vi=0.60 



4.5(> cu. ft. 



This result is the growth of the tree for the last ten years. Its 

 yearly growth is therefore .456 cubic feet. As iu the case of all 

 the large trees figured on, limb wood is left out of account, as well 

 as the very top of the tree and the stump below one foot from the 

 ground. 



Further use can be made of these measurements and methods. 

 Let us suppose this tree seventy years younger, or in other words 

 suppose seventy of the annual rings to be stripped off the outside 

 of it. In that case the diameter of the wood at section one, would 

 be eight inches, and the thickness of the ten rings next inside eight 



