196 



Clyde E. Leightt 



Series 100 



i i i 



i i 



(M 



i 



1 4 



2 





















1 



8 



8 



8 



2 



















5 



11 



6 



6 



2 

















1 



10 

 2 



11 



7 



8 

 12 



5 

 10 



3 



2 















1 



9 



14 



12 



12 





1 





. 











1 



11 



14 



11 



4 



1 

















2 



4 



7 

 6 



9 



8 



1 



7 



1 

 2 



2 



















1 



3 



2 



7 

 2 

 1 



5 



1 



1 



2 



1 



6- 8 



8-10 

 10-12 

 12-14 

 14-16 

 16-18 

 18-20 

 20-22 

 22-24 

 24-26 

 26-28 

 28-30 



Totals 



Fig. 176. — Correlation between diameter of straw, in decimillimeters, subject; 

 and breaking strength of straw, in grams, relative 

 T= .852 ± .011 



is .913 dz .006. From this the decrease is graduated to the least crowded 

 condition, where the coefficient is .820 ± .014. The difference is .093 ± 

 .015, which is about six times its probable error. In line 62 the correlations 

 are not graduated in the same order. The lowest again occurs in the 



1 18 34 42 55 47 39 24 15 13 



2 



Totals 



7 

 26 

 30 

 37 

 34 

 49 

 42 

 24 

 25 

 19 



6 



1 



300 



Series 122 



i 



2 2 i 2 S 



o cq ^ o 00 



2- 4 



4- 6 



6- 8 



8-10 



10-12 



12-14 



14-16 



16-18 



18-20 



20-22 



22-24 



24^26 



Totals 



1 





















3 





















7 



9 



















4 



30 



10 



3 



4 

 20 

 30 



7 



1 



4 



19 



14 



2 

 16 



4 













1 





5 



22 



14 



6 

















7 



19 



1 



9 

 9 



4 

 5 

 3 



1 

 2 



1 



1 



1 1 



15 53 61 43 47 38 24 12 



Totals 



1 



3 



16 

 39 

 34 

 54 

 41 

 48 

 40 

 16 



6 



2 



300 



Fig. 177. — Correlation between diameter of straw, in decimillimeters, 



subject; and breaking strength of straw, in grains, relative 



T= .913 ± .006 



