22 



H. H. Love and C. E. Leighty 



55-60 

 60-65 

 65-70 

 70-75 

 75-80 

 80-85 

 85-90 



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1 



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 9 



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13 



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 11 



7 



4 



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 11 



45 



1 



1 



6 



20 



14 



29 



24 



24 



12 



4 



2 





1 



2 













140 







1 



3 



9 



25 



19 



16 



18 



10 



8 



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1 



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1 



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122 









2 





3 



4 



6 



8 

 2 



7 

 2 



17 



1 



7 



11 

 1 



2 

 1 



1 



1 





1 



3 



73 



7 



2 20 21 37 30 61 



45 40 23 28 14 14 



400 



Fig. 3. — Average height of plant in centimeters, subject 

 Total yield of plant in grams, relative.- 1912 

 Coefficient of correlation ^.676 zL .018 



for 1910 to .689±.016 for 1909; while the correlation between average 

 height of plant and average yield of culm per plant (Figs. 4, 5, 6, 7), 





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25-30 



4 





































4 



30-35 



6 



1 



































7 



35-40 



14 



12 



1 

































27 



40-45 



19 



37 



18 



1 



1 





























76 



45-50 



5 



40 



64 



27 



9 



4 



2 

























151 



50-55 



2 



13 



60 



79 



39 



30 



10 



1 



2 











1 











237 



55-60 





2 



12 



31 



59 



39 



33 



10 



4 





4 



1 









1 







196 



60-65 





1 



3 



7 



9 



11 



18 



11 



7 



o 



7 





1 



2 





1 







83 



65-70 







1 



3 



1 



3 



4 



3 



3 



3 



2 



1 





1 









2 



27 



70-75 





1 



1 



1 





1 



2 



1 





1 



3 



2 



1 





1 









15 



75-80 

















1 





1 



















2 





50 



107 



160 



149 



118 



88 



69 



27 



16 



10 



16 



4 



2 



4 



1 



2 







2 



825 



Fig. 4. — Height of culm in centimeters, subject 



Total yield of culm in grams, relative. 1908 

 Coefficient of correlation = .710 ± .012 



7 16 33 32 56 53 65 58 55 39 30 27 10 



Fig. 5. — Average height of plant in centimeters, subject 



Average yield of culm per plant in grams, relative. 

 Coefficient of correlation = .850 ± .008 



1909 







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3 



50- 



-55 





2 



4 



2 































8 



55- 



-60 





1 



2 



1 



7 





























11 



60- 



-65 



1 







8 



9 



9 



6 



3 























36 



6.5- 



-70 









2 



11 



9 



26 



8 



3 



1 



















60 



70- 



-75 









2 



6 



13 



18 



29 



17 



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5 





1 



1 











94 



75 



-80 













1 



6 



18 



32 



21 



14 



4 



1 



2 











99 



80- 



-85 

















4 



12 



20 



24 



22 



8 



8 



2 





2 





102 



85- 



-90 



















1 



4 



11 



12 



17 



14 



3 



3 



3 





68 



90- 



-95 





















1 



1 



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3 



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5 



2 



2 



1 



18 



500 



