107 



Working scheme for the first period of 30 years, 1900 to 1929. 



Abba to bb taebit iit hasd. 



Periodic 

 blacks. 



II 

 III 



IV 



Coapattnieiitii, 



;a 1 



LB 1 

 C 5 



A 



■A 



U 



.C 



:a 5 



;b 5 



c 1 



Areas. 



Ages of 



the 



cropH in 



1900. 



Nalnre of felliigs to 

 be made. 



£4 

 87 

 44 



/. — Fellings by volume. 



185 



140 

 130 

 150 



BegeneratioQ fell- 

 Jrgs by volume, 

 35,893 c. ft. a year 

 during the first ten 

 years until the first 

 revision of the 

 poBbibility. 



:TI. — Areafellings. 



176 



149 



105 



33 



463 



153 



117 

 80 



189 

 68 



100 



707 



205 

 112 

 214 



631 



125 



110 



86 



90 



80 

 75 

 70 

 50 

 65 

 40 



6 



15 

 16 



Final thinnings by 

 one-fifteenth of 

 the area (31 aeres 

 a year) repeated 

 twice during the 

 period. 



Thinnings by one- 

 tenth cf the area 

 (71 aores a year) 

 repeated three 

 times during the 

 period. 



Cleanings according 

 to cultural require- 

 ments. 



BSIIARES. 



The fellings by volatre- 

 comprise seed or pie- 

 paration fellings, se- 

 condary and final fell*-- 

 ings. The actual volnms 

 of wood in oomp.irt- 

 ments to be S'lbjected 

 f o th( s ! fellings is~ 



828,800 c. ft. Adding 

 the estimated growth 

 dtr'ng 15 years (one- 

 half of the period, as 

 Boire fellings will be 

 made at the beginning 

 and snme at the 

 end of the per'od^ at 

 the rate of 2 psr cent, 

 a year, or 248,490 c. ft., 

 the t')tal volunae is 

 1,076,790 c. ft. There- 

 fore, during each year 

 of the period there mav 

 be felled l,076,^9O4^ 

 80=35,893 c. ft. 



Or, the total number of' 

 exploitable trees in the- 

 periodic block I -h the 

 cumber of years in t he 

 period will give the- 

 annual possibility by 

 namber of treoF. 



The possibility will be 

 revised at the end of 

 ten years. 



.3. Period for wliicli the fellings are prescribed.— The fellings 

 in this method aro prescribed for one period only. The 

 length of this period, which is a sub-multiple of the exploit- 

 able age, should be long enough for the seedlings of the 

 principal species to establish tliemselves completely. 



4. Area to be operated on.— Except in the modifie i method 

 subsequently mentioned, the area to be taken iu haad each 

 year or sub-period is not preecribed iov ihe principal fellings. 

 These are, it "will be ?een, prescribed by volume or by- 

 number of trees and may be made wherever required in any 



