156 



LATEX 



it may be noted that the latex of starved plants becomes thin 

 and watery. Moreover, the frequent association of these 



FIG. 79. Row of Para-rubber trees (Hevea brasiliensis) on Galley Beach 

 Estates, Ceylon. (Reproduced by permission of the proprietors of 

 the Indiarubber Journal.) 



elements with the phloem, and the often intimate contact 

 between them and the assimilatory tissues, seem to indicate a 

 role in the transport of elaborated food-material. The by- 



