nini! 



IldU-ddodspci d : ( 7/ ///.v/V 



20:] 



trict is nearer six pounds. The rubber content of seven samples taken 

 at widely sejia rated stations in the district averages 2.0 per cent and 

 microscopic examinations of others indicate that th(>re is not a wide 

 fluctuation from this mean. 



Fig. 3. ChrifSotJuimnus nauscosus var. consimilis. IMant no. 21(5, Walker Lake, 

 Nevada. Root two ami three-eighths inches thick ; trunk five inches thick at base 

 of first branch; total height six feet; estimated ^veight about thirty pounds. This 

 is an exceptionally large plant. 



The southernmost areas of Rabbit-brush within this district are in 

 Esmeralda County and lie along the Tonopah and Goldfield Railroad 

 from Redlich nearly to Millers, one of them extending as a belt along 

 the westerly side of the San Antonio Wash. Small areas of large brush 

 were found at the upper end of Walker Lake, but mucli more import- 



