6 PREFACE. 



vegetation produced upon the large tract since it was fenced nearly 

 two years ago. It will be noted that deductions concerning the car- 

 rying capacity of this range made from this study agree in a most 

 satisfactory manner with actual practice. It is proposed in the near 

 future to determine by actual trial the amount of stock this fenced 

 area will carr^^ without deteriorating. 



Acknowledgments are due to Mr. Howell Jones, of the Santa Fe 

 railway system, for much assistance in prosecuting the investigations 

 reported in this bulletin. 



VT. J. SpiLLMAN, Agrostologlst. 



Office of Grass and Forage Plant Investigations, 



Washington, I). C.^ June 29^ 190 Jf. 



