A clear felling may be in strips, in patches, or in compart- 

 ments. 



Conversion of system.— A cliange from one sylvicultural 

 System to another, or from a temporary to a systematised and 

 more permanent method of treatment. 



Group method, — A modification of the method of successive 

 acegeneration fellings by which the exploitable crop is felled 

 in small groups wiih a view eitlier to induce regeneration 

 or to favour tlie growth of established seedlings. 



Improvement felling.— A provisional operation undertaken 

 to improve the growth and composition of an existing crop 

 ffay means of the rem'^val of individuals impeding tlie deve- 

 lopment of others of greater promise than themselves ; it 

 may thus include the removal of mature trees of the principal 

 sppcies in order to hasten the establishment of a more 

 vigorous crop, as well as the lemoval of trees of other species, 

 Tvhich by their cover render the extension of more valuable 

 -kinds impossible. 



Irregular treatment.— Forests are sometimes not subjected 

 :to any regular method of treatment, such of the produce as 

 is saleable being realised wherever and whenever there is a 

 demand by allowing purchasers to remove it under . a 

 system of permits or passes. The fellings made in such 

 cases are called unregulated fellings. 



Hetliod of clearances or clear fellings.— Removal, in one 

 operation on a portion of the area to be treated, of the whole 

 crop in such a manner as to pass over the entire area once 

 ^luring the period that is fixed for trees of the species felled to 

 -attain the exploitable size. This method includes several 

 different forms, ©is:., — 



(i) Clearings on small areas with natural regeneration, 

 or the Patch Method. 



(ii) Clearings on alternate parallel strips, or the Strip 

 Method. 



(iii) Clear fellings with artificial regeneration, or the 

 Compartment Method. 



Metliodof coppice with standards.— Similar to the coppice 

 rsystem save that a certain number of the most promising 

 and valuable stems are reserved at each felling and allowed 

 to attain a larger size than the rest of the coppice growth. 

 The regeneration fellings in this method are called stored or 



