100 ECONOMICS OF FORESTRY. 



development will become applicable through the 

 length and breadth of our country, just as in the 

 old countries. 



As in every productive industry, so in the fores- 

 try industry we can distinguish two separate yet 

 necessarily always closely interdependent branches, 

 namely, the technical art which concerns itself 

 with the production of the material, and the busi- 

 ness art which concerns itself with the orderly, 

 organized conduct of the industry of production. 



Since the materials and forces of nature are the 

 source of the mighty processes of organic life 

 which find expression in forest growth, the art of 

 forest crop production naturally relies mainly upon 

 a knowledge of natural sciences, by which the 

 forester may be enabled to direct and influence 

 nature's forces into more useful production, than 

 its unguided activity would secure. 



The nature of the plant material, its biology, its 

 relation to climate and soil, must be known to 

 secure the largest, most useful, and most valuable 

 crop ; that portion of botany which may be segre- 

 gated as dendrology the botany of trees in all 

 its ramifications must form the main basis of the 

 forester's art. To study such a segregated portion of 

 the large field of botanical science presupposes, to be 

 sure, a sufficient amount of general botanical knowl- 

 edge. In order to know, recognize, and classify his 

 materials the methods of classification, the general 

 anatomy and histology, must be familiar to him, 



