230 BOTANICAL GAZETTE [September 



it in the tropics does not soon wear off. I have been on railway 

 lines whose embankments were covered with Mimosa, and watched 

 with keen amusement, as the train advanced, the quick falling of the 

 leaves like the progress of a roller on the seacoast. 



In Ceylon the planters complain that it is among their most 

 troublesome weeds, and one sees it everywhere in the cocoanut groves 

 and tea plantations. Though highly interesting and valuable in a 

 botanical laboratory. Mimosa pudica is quite useless on a tropical 



estate. 



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