BIBLIOGRAPHY 239 



8. What effect does burning each year have on the production of herbage 

 on grassland? WTiy? 



9. What effect does burning each year have on the production of herbage 

 and browse vegetation on the chaparral type? On the woodland type? Why? 



10. How is the natural trend of plant development or succession influenced 

 by the burning of (i) grasslands, (2) chaparral, and (3) wooded pasture? 



11. How does burning in the piney-plains region of the South affect the 

 estabhshment and spread of (i) broomgrass, (2) carpetgrass, (3) " wiregrass," 

 and (4) lespedeza? 



12. How may grazing influence the control of fires? How may grazing be 

 responsible for the starting of fires? Discuss the advantages of Hvestock 

 trails, watering places, and driveways in the control of fires on forested range. 



13. Name and define the different classes of forest fires? Which is the 

 most destructive to the soil? Which is the most common? 



14. Assuming for the sake of argument that grazing is an asset in the control 

 of fires on wooded pastures, why is it essential to procure imiform but not 

 excessive use of the forage? 



BIBLIOGRAPHY 



Barnes, Will C. Western Grazing Grounds and Forest Ranges. Sanders 



Pub. Co. (Breeder's Gaz.), Chicago, 1913. 

 Graves, Henry S. A Pohcy of Forestry for the Nation. U. S. Dept. of 

 Agr., Office of Secretary, Cir. 148, 1919. 

 The Principles of HandUng Woodlands. John Wiley & Sons, Inc., 



N. Y., 191 1. 

 Protection of Forests from Fire. U. S. Dept. of Agr., Forest Service, 

 Bui. 82, 1910. 

 Griffiths, David. Forage Conditions on the Northern Border of the 

 Great Basin. U. S. Dept. of Agr., Bur. of Plant Ind., Bui. 15. 

 1Q02. 

 Hatton, John H. Eradication of Chaparral by Goat Grazing. U. S. 

 Dept. of Agr., Forest Service, Review of Forest Service Investi- 

 gations, Vol. 2, 1913. 

 Livestock Grazing as a Factor in Fire Protection on the National 

 Forests. U. S. Dept. of Agr. Cir. 134, 1920. 

 Jacquot, a. Incendies en Foret. Translated by C. E. C. Fischer, Supt. 



Govt. Printing, Calcutta, 1910. 

 Plummer, Fred G. Chaparral. U. S. Dept. of Agr., Forest Service, Bui. 

 85, 1911. 

 Forest Fires: Their Causes, Extent, and Effects. U. S. Dept. of Agr., 



Forest Service, Bui. 117, 1912. 

 Lightning in Relation to Forest Fu-es. U. S. Dept. of Agr., Forest 

 Service, Bui. in, 1912. 



