SO 



PRACTICAL FORESTRY IN 



nual fire and tax charge from exceeding 20 cents, what price 

 obtainable for cut-over land today, made to earn 5 per cent 

 compound interest in some other business, is as profitable as 

 keeping the land for a second crop? If other business would 

 earn 6 per cent? 



5% 

 Gross return=$C.OO 

 20X102 = 2.04 



6% 

 Gross return=$6.00 

 20X.142 = 2.84 



$3.96-h.56=$7.07 



?3.10-T-. 00=13.51 



FUTURE STUMPAGE PRICES NECESSARY TO MAKE DOUGLAS FIR 



SECOND CROP PAY EITHER 5 OR 6% COMPOUND 



INTEREST ON INVESTMENT. 



Maximum Original Investment $7.50 an Acre. Maximum Annual Carrying 

 Charge 30c an Acre. 



These tables bring out a number of very interesting primary 

 facts : 



