FOREST AND FORESTRY DEFINED. 



103 



mensuration has been developed into a special 

 branch of mathematics and many methods have 

 been developed, by which not only the volume 

 and rate of growth of single trees, but of whole 

 stands, can be more or less accurately determined. 

 Similarly, finance calculations have been more" 

 fully developed in the forestry business than are 

 usually practised in any other business excepting 

 perhaps Life Insurance. 



Without going into further details of the con- 

 tents of the science of forestry, reserving for two 

 chapters a fuller discussion of the two main 

 branches, a comprehensive view may be gained 

 by the following systematic statement of the vari- 

 ous branches into which forestry may be divided. 



SYSTEM OF FORESTRY KNOWLEDGE. 





a. 2 



1^ (fl +i 

 pL, < 'O 



E U 



O (U 



s •« 



o 



Eh 



m 

 ti 

 o 



Forestry Statistics. 



Areas : forest conditions — distribution — 



composition. 

 Products : trade — supply and demand — 



prices — substitutes. 

 Forestry Economics. 

 Study of relation of forests to climate, 



soil, water, health, ethics, etc. 

 Study of commercial peculiarities, and 



position of forests and forestry in po- 

 litical economy. 

 History of Forestry. 

 Forestry Policy. 

 Formulating rights and duties of the 



state, forestry legislation, state forest 



administration, education. 



