_ _ 



PHOTOROPISMS "'I?H--tt03fdeHR<MATTtrXT(mTnnr"TTn^r5' 'AWVOLTOX. 



e. 



. S tr <t*.f*-.. 



+<- /o 

 ANNIE LtAY KURD. 







Subraitted 3*. partial fulfillment of the requirements 

 for the degree of Doctor of Philosophy. 



University of California 



April 26, 1918. 



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/ 



