139 



Tabic 4. 

 For thinning 



METHOD OF VALUING GROWING TIMEEB* 



And if trees be peiiodlcaUy thinned out to the distance c f 

 one fifth of their height, and that they increase fifJeeu 

 inches in height, and one inch and a half in circumference 

 annually, the number of trees on an a<;re, and the nun^btr 

 to be cut oiit at different periods, and the number of feeli 

 they will respectively contam at those periods, will be as 

 under, \\i.. 



TABLE R\ 





. 



1 







qj 



Nwnvlier 



Coil- jNum-; « 



Age. 





'.:.. 



C(MltCt!t3. 



1 



of 'a-fes 

 on an 



tents of ber to' g 

 the bccui o 





E 









Q 



acre. 



whole, out. j ^ 



years. 



feet. 



inch. 



fv i« 



ptS. 



feet. 





feet. 



1 feet. 



y6 



20 



3 



1 3 







4 



2722 



3402 



980' 1225 



20 



i>5 



3? 



2 5 



3 



5 



1742 



4246 



5321 1296 



24 



3i) 



4] 



4 2 



7 



6 



1210 



5100 



3>2i 1357 



28 



35 



5i 



6 8 



4 



7 



888 



5944 



20S 



M92 



32 



40 



6 



10 







8 



6so 



6800 



143. 



1430 



36 



45 



6^ 



u \ 



10 



9 



537 



7644 



102 



1452 



40 



50 



7i 



19 6 



4 



10 



435 



S4.y4 



75 



1464 



44 



55 



H 



25 11 



10 



11 



36a 



9355 



58 



1507 



48 



Co 



9 



33 g 







12 



30-2 



10192 



45 



1518 



52 



65 



9^T 



42 10 



10 



13 



257 



H026 



35 



1.501 



56 



70 



lOi- 



53 7 







14 



222 



11895 



29 



1553 



6U 



75 



lU 



65 10 



11 



15 



1.03 



12720 



23 



151^ 



64 



80 



12 



80 







16 



170 



136i)0 







Remarks, 



It will be observed in all these tables, that when trees have 

 doubled their age, there are only one fourth of the number 

 remaining on an acre, in consequence of their distance 

 bernsr doubled ; but as each tree will then have increased its 

 contents eight-fold, therefore the number of feet on an 

 acre must be thei: doubled. Above, at 64 years of age, there 

 is exactly double the number of feel that there is at 32 years, 

 of age. 



Table 5. And if trees be periodically thinned out to the distance of 



'""'^ one fifth of their heijfht, and that they increase eighteen 



inches in height, and two inches in circumference, annually, 



the 



lis. 



