51 

 is bound to follow if this practice is carried out. 



(C) Brush Fields 



From a memoranduin obtained from the files of the 

 United States 5'orest Service, District 5. ^an Erancisco, 

 California, was obtained the following: - 



"Within the timbered National Forests of Califor- 

 nia, excluding the Angeles, Cleveland, Mono, Inyo and 

 Santa Barbara, there are 2,847,134- acres classified as 

 brush-fields. On this area, 1,861,870 acres or 13.6^ 

 of the timbered forests, consist of brush-fields with- 

 in the timber belt, and the soil occupied once bore a 

 stand of timber, and is capable in most cases of bear- 

 ing timber again. They are surrounded by timber, is- 

 lands of timber and scattered large trees, snags, stum- 

 ps and roots appear throughout, trees planted there 

 grow, scattered young trees slowly come in from natural 

 seeding, and the sites are the same as adjacent timber- 

 ed lands except that the soil is poorer due to deter- 

 ioration." 



(l) Origin of Brush-fields 



There can be little doubtL that repeated fires 

 cause the formation of brush fields. Brushy areas in 

 timber belts and on soils similar and adjacent to those 

 bearing tree growth. They are irregular in outline. 



