REFERENCES 291 



REFERENCES 



1. Thirteenth Census of the United States taken in the Year 1910. Bureau 

 of the Census, Department of Commerce, Vol. V, Washington, 1913, pp. 

 327-472. 



2. Sampson, A. W., and Weyl, L. H. Range Preservation and Its Rela- 

 tion to Erosion Control on Western Grazing Lands. Bulletin 675, U. S. 

 Department of Agriculture, Washington, 1918, p. 35. 



3. Hill, R. R. Effects of Grazing upon Western Yellow-Pine Reproduc- 

 tion in the National Forests of Arizona and New Mexico. Bulletin 580, U. S. 

 Department of Agriculture, Washington, 191 7, p. 20. 



4. Hardtner, H. E. a Practical Example of Forest Management in 

 Southern Yellow Pine. Proceedings of the Southern Forestry Congress, 

 Chapel HiU, 1916, pp. 71-80. 



5. Mason, D. T. Brush Disposal in Lodgepole-pine Cuttings. Proceed- 

 ings of the Society of American Foresters, Vol. 10, 1915, pp. 399-404. 



6. Cary, a. Ticks and Timber. American Forestry, Vol. 26, 1920, pp. 

 92-94. 



7. Sparhawk, W. N. Effect of Grazing upon Western Yellow Pine Re- 

 production in Central Idaho. Bulletin 738, U. S. Department of Agriculture, 

 Washington, 1918, pp. 22-25. 



8. Jardine, J. T., and Anderson, M. Range Management on the 

 National Forests. Bulletin 790, U. S. Department of Agriculture, Washing- 

 ton, 1919. 



9. Secrest, E. The R61e of Artificial Regeneration in the Re-enforce- 

 ment of Hardwood Woodlots. Journal of Forestry, Vol. XVI, 1918, p. 329. 



10. Barnes, W. C. Western Grazing Grounds and Forest Ranges, Chicago, 

 1913- 



11. Sampson, Arthur W. Effect of Grazing upon Aspen Reproduction. 

 Bulletin 741, U. S. Department of Agriculture, Washington, 1919. 



Chapline, W. R. Production of Goats on Far Western Ranges. Bulletin 

 749, United States Department of Agriculture, Washington, 1919. 



Coville, F. V. Forest Growth and Sheep Grazing. Bulletin 15, Division of 

 Forestry, United States Department of Agriculture, Washington, 1898. 



DuBois, C. Systematic Fire Protection in the CaUfornia Forests. Forest 

 Service, United States Department of Agriculture, Washington, 1914, p. 8g. 



Hatton, J. H. Live-Stock Grazing as a Factor in Fire Protection on the 

 National Forests. Circular 134, United States Department of Agriculture, 

 Washington, 1920. 



HoDSON, E. R. The Effect of Grazing on the Caribou National Forest. For- 

 estry Quarterly, Vol. 8, 1910, pp. 158-168. 



