SYLVICULTURE. 



I. Lumbering precedes reseeding natural seed regeneration on 

 clearings, namely: 



a. On uniformly cleared compartments (cleared compartment 

 type); 



b. On cleared strips (cleared strip type) ; 



c. On cleared groups (cleared group type) ; 



d. On cleared selected patches (cleared selection type). 



II. Lumbering coincides with reseeding natural seed regenera- 

 tion under shelterwood, namely: 



a. On uniformly sheltered compartments (shelterwood compart- 

 ment type) ; 



b. On sheltered strips (shelterwood strip type); 



c. On sheltered groups (sheltered group type) ; 



d. On sheltered selected patches (shelterwood selection type). 



III. Lumbering follows reseeding natural seed regeneration by 

 advance growth, namely: 



a. With uniform advance growth all over a compartment (ad- 

 vance growth compartment type) ; 



b. With advance growth in strips (advance growth strip type) ; 



c. With advance growth in groups (advance growth group type) ; 



d. With advance growth in selected patches (advance growth 

 selection type). 



E. According to the participation of ligneous weeds (bushes, 

 seedlings, saplings, poles and trees of a negative value) in the 

 regeneration : 



Totally successful seed regeneration; 



Groupwise successful seed regeneration; 



Patchwise successful seed regeneration; 



Individually successful seed regeneration; 



Unsuccessful seed regeneration. 



In America, it will be frequently advisable for the forester to 

 merely work toward a " groupwise " or " patchwise " successful seed 

 regeneration. 



F. According to the number and according to the distribution 

 of standards left in the regeneration "area": Natural seed regen- 

 eration 



a. With standards systematically left all over the compart- 

 ments; 



b. With standards left in strips; 

 o. Witli standards left in groups; 



d. With isolated scattering standards. 



The " compartment " types had better be called " uniform " 

 types ; the " selection " types had better be termed " patch " types. 



