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THE AMERICAN NATURALIST [Vol. XL VII 



IV. Analysis of Data 



The distributions of seed weight are shown in the 

 conventional units of .025 gram range. 10 Tables I-II 

 give those for the seeds germinating normally, Tables 

 III-IV for those which germinated but produced more or 

 less abnormal seedlings, 11 Tables V-VI those for seeds 

 which failed to germinate. 



From these the three more essential physical constants 

 (mean, standard deviation and coefficient of variation) 

 have been deduced and are presented with their probable 

 errors in Tables VII, VIII and IX. 12 



