



. ) 



YL Silviculture ................................................. 46 



Eelation Between Silvicultural Operations and the Value of 



Wood Products ........................................... 46 



Planting .................................................. 47 



Cutting the Old Timber to Secure Eeproduction .............. 49 



Silvicultural Systems ....................................... 50 



Strip and Group Systems ................................. 50 



Clear Cutting with Seed Trees .......................... 50 



Selection System ......................................... 51 



Changing a Selection Forest to an Even- Aged Form ........ 53 



Eeproduction of Even- Aged Stands by Successive Cuttings . . 54 



Sprout System ............................................ 55 



Unwise Legislation Eegulating Silvicultural Methods ....... 56 



Nature of the Investment Demanded by Silvicultural Oper- 



ations ................................................. 56 



u-*^ 



* 



VII. Fire Protection ............................................... 58 



Fire Fighting .................. ............................. 58 



Fire-Breaks ................................................ 59 



Fire Laws ................................................. 61 



Fire Patrol ................................................. 63 



VIII. Tax Laws ................................................... 65 



IX. Forest Mensuration ..................... ...................... 66 



, Timber Estimating .......................................... 67 



Determining the Growth of Stands. Yield Tables ............ 68 



Current Growth of Stands .................................. 69 



Growth of Individual Trees ................................. 69 



X. Forest Valuation ............................................. 70 



XI. Forest Policy ................................................ 71 



Influences of Forests on Climate ............................. 72 



Influences of Forests on Streams and Soil Erosions ........... 73 



Government Eegulation versus Government Ownership ....... 73 



History of National Forestry in United States ................ 74 



State Forestry .............................................. 76 



Agricultural Soils versus Forest Soils ....................... 77 



The State as a Producer of Timber. . ........... 78 



