1919] 



Hdll-Goochpccd : Ch rysil 



285 



commercial scale, it may not be out of place to refer tlie reader to the 

 description of the commercial process for the extraction of Guayule, 

 given by Lloyd. ^ - 



With reference to the relative amounts and the general distribu- 

 tion of rubber in the various parts of the plant body certain points 

 seem rather well established. This is an important matter since 

 persons plaiming to extract Chrysil on a commercial scale would at 

 the start wish to know which portions of the plant contain maximum 

 quantities of rubber and should be harvested and which portions 

 should be discarded as containing negligible quantities. The follow- 

 ing table contains the results of such analyses as we have at hand 

 bearing upon this matter. 



Table 7.- 



Collection 

 Number 



-Results of Analyses Made to Indicate the Relative Ajiouxts of 

 Rubber Borne by the VARiors Parts of the Plant 

 Body — Chnjsothamnus 



Variety 



144 (1) 'C. n. consimilis 



(2) 



(3) 

 (4) 



Acetone 



Extract 



Per cent. 



3 . 7.5 

 3.. 59 



3.69 



4.64 



752 (1) 2C. n. viridulus 3.47 



(2) 11.80 



(3) 22.57 

 755 (1) -C. n. viridulus 3.74 



(2) 15.10 



(3) 19.80 

 620 (1) 'C. n. consimilis 2,89 



(2) 3.. 54 



(3) 2.99 



(4) 2.89 

 (.5) 3.46 



(6) 2.79 



(7) 2.97 



(8) 3.24 



(9) 3.16 



(10) 3.43 



(11) 2.79 



(12) 2.86 



1 Collected, Golconda, Nev., Mar. 4, 1918. 

 :i Collected, Mono Lake, Feb. 1, 1919. 

 3 Collected, Ely, Nev., Feb., 1919. 



Benzene 

 Extract 

 Per cent. Remarks 



. 81 First 10 cm. up from end of root 



2.12 10 cm. section, from first rootlets to soil 

 line 



1 . 74 Main branches, 4 to S years old at bases 



and 30 cm. long 

 1.85 Tops of branches, 3 to 4 years old a' 

 bases, 2 years old at tops 

 At soil line 

 2 year old shoots 

 Tops, 1 year old 

 At r^oil line 

 2 year old shoots 

 Tops, 1 year old 

 End of root, 10 cm. 

 Ne.xt 10 cm. up root 

 Third 10 cm. up root 

 Fourth 10 cm. up root 

 Soil line 



First 7 cm. up from soil line 

 Second section up from soil line, 8 cm. 

 Third section up from soil line, 8 yrs. old 

 Fourth section, 7 years old 

 Fifth section, 6 years old 

 Sixth section, 5 years old 

 Seventh section, 4 years old 



3.75 

 1.70 

 0.42 

 2.26 

 1.63 

 0.74 

 0.13 

 0.28 

 0.37 

 0.43 

 3.03 

 1.54 

 1.91 

 2.07 

 2.20 

 1.91 

 2.20 

 2.77 



i« L.t 



8. 



