Conservation of Natural Resources in California. 



cultural crops, which must be harvested and which should therefore be 

 made to grow again. In this stage silviculture, or the management of 

 the forest so as to encourage its continued best growth, was born. 

 Finally, as natural and industrial progress led to measures for the 

 general welfare, including a wiser and less wasteful use of natural 

 resources, the forest was safeguarded and controlled so as to yield a 

 constant maximum product year after year and from one generation to 

 another. Systematic forestry, therefore, applied by the nation for the 



Converse Flats Nursery in the Angeles National Forest showing a forester trans- 

 planting seedling of Jeffrey pine for reforesting. 



benefit of the people, and practiced increasingly by far-sighted private 

 citizens, comes when the last lesson in the school of forest experience is 

 mastered. 



China holds a unique position as the only civilized country which 

 has persistently destroyed its forests. What forestry has done in other 

 countries stands out in bold relief against the background of China, 

 whose hills have been largely stripped clean of all vegetation, and whose 

 soil is almost completely at the mercy of the floods. Trees have been left 

 only where they could not be reached. Almost the sole use for lumber 



