WHALEY: RUBBER 29 



Literature Cited 



Brandes, E. W. 1941. Rubber on the rebound — East to West. Agric. in the Americas. 



1: 1-11. 



, 1942a. Go Ahead, Guayule ! Agric. in the Americas. 2: 83-86. 



• , 1942b. Rubber from the Russian dandelion. Agric. in the Americas. 2: 127-131. 



Lloyd, Francis Ernest. 1911. Guayule (Parthcnium argentatum Gray) a rubber-plant 



of the Chihuahuan Desert. Carnegie Institution of Washington. Pub. 139 : viii+213. 



Illus. 

 , 1932. Mode of occurrence of caoutchouc in the guayule, Parthenium argentatum 



Gray, and its function. Plant Physiology 7: 131-138, 1932. 

 Loomis, Harold E'. 1942. Castilla rubber's comeback. Agric. in the Americas. 2: 171-176. 

 Polhamus, Loren G. 1933. Rubber contents of various species of goldenrod. Jour, of 



Agric. Res. 47: 149-152. 

 , H. H. Hill and J. A. Elder. 1934. The rubber content of two species of Crypto- 



stegia and of an interspecific hybrid in Florida. USDA Tech. Bull. 457: 1-23. 

 Rands, R. D. 1942. Hevea rubber culture in Latin America. India Rubber World. 106: 



239-243, 350-356, 461-465. 

 Wolf, H. and R. 1936. Rubber, xii+533 p. New York. 



