No. 532] GENETIC AL STUDIES ON (ENOTHERA 233 



by mutation from a form representative of a typical wild 

 species will be sufficiently evident to require no com- 

 ment at this time. A discussion of the matter will there- 

 fore be reserved until the Writer has proceeded further 

 with his studies. 

 Cambridge, Mass., 

 November, 1910. 



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