THE ART OF THE SECOND GROWTH 



Paragraph XLI. Types of natural seed regen- 

 eration (enesar). 



A fixed method is applicable in the arts only where a fixed set 

 of conditions exists. Fixed and regular forms exist in primeval 

 woods but rarely. Hence the impossibility, from a sylvicultural 

 standpoint, to adopt any fixed European " method " of seed regen- 

 eration for direct application in American practice. 



There might be distinguished, nevertheless, within all woods 

 on the globe, certain distinct and characteristic " trfbks " or aggre- 

 gates of characteristic qualities and influences typical for the spot 

 on which they are found, by which Nature secures, with or without 

 Man's co-operation, a local rejuvenescence of the forest. These 

 tricks — not methods or systems — had best be called " types of regen- 

 eration:" Typical conditions are used to produce typical effects. 



The word " enesar " is used in lieu of n. s. r., or in lieu of 

 " natural seed regeneration." 



The types of enesar, like the types of animal breeds, or of 

 machines, may be scrutinized from various viewpoints. We might 

 diflFerentiate them: 



A. According to the relative position of old and nevr 

 groivth.: 



I. The young growth develops underneath the old growth: 



a. Whilst the old growth is left intact (natural seed regenera- 

 tion by advance growth), or 



b. Whilst the old growth is gradually reduced (natural seed 

 regeneration under shelter woods). 



II. The young growth develops at the side of the old growth 

 (natural seed regeneration from adjoining timber). 



B. According to the size of the units of regeneration, 

 •wrhich may be: 



I. Compartments, i. e., a cove, a slope, a top or a coherent 

 part thereof, comprising from ten to one hundred acres. 



II. Strips, i. e., figures of a more or less rectangular form, in 

 which the length is a multiple of the breadth, the latter not ex- 

 ceeding 500 feet. 



III. Groups, i. e., aggregates of growth of a more or less cir- 

 cular form, covering 0.1 to 4 acres. 



IV. Patches, i. e., areas covered by the crown of an individual 

 tree, about 0.01 acre in extent. 



The figures are meant to illustrate, and are not meant to 

 define (in this paragraph as well as in the following fifteen para- 

 graphs). Ill 



