154 FORKST REGUI-ATION 



6. Actual Current Growth per acre on the forest here con- 

 sidered, is as follows : 



a. Calculated bv use of Yield Table : 



VOLUME IN CUBIC I'EEl'. 



70 X 0.9 X . 46 = 2890 

 130 X 0.7 X 70= 6730 



60 X 0.8 X 105 = 5040 

 200 X 0-7 X 115 = 16100 

 150X0.7 X 110=11550 



40 X 0.8 .X 1 10^ 3520 



Actual Current Growth per acre : 70.5 cubic feet, 

 b. Calculated on basis of Average Yearly Growth of Ripe tim- 

 ber per acre : 



\GE 



\()l,r.ME IN CUlilC TEE'I". 



70 X 0.9 X 93 = 5550 



130 X0.7 X93= 8450 



60 X 0.8 X 93 = 4460 



200 X 0.7 X 93 ^ 13100 



150X0.7 X93= 9750 



40 X 0.8 X 93 = 29S0 



Total 650 acres 44290 cubic feet, or 68 cubic feet per acre of 



Actual Current Growth. 



7. Comparison of Normal Current Growth and Actual Current 

 Growth : 



NORMAI, CURRENT ACTUAL CURRENT 

 GKOWTII. GROWTH. 



Calculated on basis of Average 



Yearly Growth of ripe timber 93 cu. ft. 68 cu. ft. 



Calculated on basis of Current 



Growth as per Yield Table 93 cu. ft. 70 cu. ft. 



In trying to regulate the cut of this forest by the Austrian- 

 Heyer Formula we have : 



Cut = Growth -j- (Ga — Gn)/a. 



