286 



juice, is said to grow in abundance on the 'rolling land of 

 Central Mexico, is readily propagated, may be cut two or three 

 times a year, may be treated when fresh, or dried for export, and 

 yields by weight 40 per cent, of a gum < superior to most india- 

 rubber, and having the additional advantages of abundance, 

 cheapness and ease of manipulation. 



«™i !• l ian ^ name is gaicl t0 be 'y ule >' already known in 

 apphcation to Cashlloa, while the scientific designation < Syn- 

 athereoeas Mexicanus' seems to have been unfortunately chosen, 

 r c v h t e f nus . Synantherias, which has the only similar name 

 known to botanists, is a member of the Aroid family 



comminuted 



witiirm* „«,<„. • • — ";~"" D wcai u ^w tue comminuted snruo • 



the sen^S TC^S? than Strainin S trough » canvas bag, for 



o issue ?n ft ^ I* 6 ° V u C6nt f WaSte matter ' can be ex P^ cted 

 resins and ^n ^ T emicalI >; P ure ' condition, since the oils, fats, 



bv the itSff y * he l Ye ^\* substances would be incorporated 

 fresh mat3 ^ th + er T ld SUch a P rocess be carried out on 

 tne solvent 'q-r ter ° f Which Would P revent the action of 

 application * W f ; nac ™ ra cies are frequent in claims and 



pubbsh ^^racconnt P , of 8 K f T artificial rubber ^titutes, the 

 pub c ftJSZ ^ i ° ? ^ sometimes intended to draw 

 K^lf£e° k n n ^£r U p nduIy enli ghtening trade competitors, 

 a proce s bv ^Zl t f %f ? ny 8Uch new 8onrce of wealth , or of 

 ex P P lS, genl^v S».K^~ J^ ±* be . 



exoloitpd apno^n- Vx . , u *""ess natural product may be 

 «»W2^ —An the pari of 



small sechon 'of f'J CO f reSP u° ndent f o™ded for identification a 

 the ^wiW in a ^bsequent letter he gave 

 cent.orthe\ark?oS a ' statln f/hat he had found that 5 per 

 could get not h i n ' f ! ^ rubber of fair ^ al *ty, but that he 

 examination of l g . trom * h * * ood > and that after a further 

 useless for Lv com m CaIed rubber > he believed that it was 

 as beW that Jf C?r C ' al PUri>0Se ' This stera was determined 



of wh4 append fSr ( p mtat T> A ' Gr ^ a foU account 

 again in the^fo/t? ^r iJP 1 '^^^ for Ma ^ 1905 ' and 

 The first identiXf™ S n L) T nal Institute for 1906, p. 114. 



appeared nXf^7 l° f , £ U ? yule with ^rthenium argmtatum 



In the coursf of ih £?* ? 0fon *' N °" *' Jnly-August, 1901, p. 105. 

 to GuayuTe has t,n- Sent *™J™®"* information with regard 

 paragraphs thaffoUow a ™ lable ** d '" summarized in the 



prepared 1 ^ Mr ' w°V he J ollowi ng memorandum on Guayule, 

 d'Affaires in Mexico \llL n* M . Iler ' His Ma J e sty's Charge 

 to Kew from the cS l Sf^S eCe ? bep 3rd ' 1906 > was transmitted 

 of introducing the &M& <&$££?*" ° D ^ ^^ 



year^AmfuarSerLs No h ^o^ eXiC o? T Budget for the current fiscal 

 ^ export duty on ^ayule/' * } ' "*"* to the im P osition of 



