198 



Clyde E. Leighty 



Series 102 



o o o 



i 



Totals 



4- 6 



3 

























3 



6- 8 



7 



1 























8 



8-10 



10 



6 























16 



10-12 



1 



14 



1 





















16 



12-14 



1 



14 



20 



3 



















38 



14-16 





6 



15 



14 



















35 



16-18 







7 



23 



•8 



2 















40 



18-20 







1 



11 



11 



4 



4 













31 



20-22 







1 



3 



9 



13 



7 



2 











35 



22-24 









1 



3 



11 



16 



5 



2 



1 







39 



24-26 











1 



1 



4 



7 



4 



2 



1 





20 



26-28 















2 



2 



5 



3 



3 



1 1 



17 



28-30 

























1 1 



2 



Totals 22 41 45 55 32 31 33 16 11 6 4 2 1 1 300 



Fig. 179. — Correlation between diameter of straw, in decimillimeters, subject; and 



breaking strength of straw, in grams, relative 



r= .960 ± .003 



least crowded condition, but the highest is in the medium condition of 

 crowding. The difference is here .089 ± .009, wliich is great enough to 

 be of significance. The diameter of straw is, then, highly correlated with 

 breaking strength, and the lowest correlation occurs when crowding is least. 



Series 118 



4- 6 

 6- 8 

 8-10 

 10-12 

 12-14 

 14-16 

 16-18 

 18-20 

 20-22 

 22-24 

 24-26 



Totals 



11 



















22 



15 

















6 



40 



22 



5 



6 

 21 

 21 



2 

 24 



1 



5 















6 



13 



10 



1 



1 











1 



7 



8 



7 



4 













2 



3 



8 



6 



3 













1 



4 



3 



4 



2 









1 







1 

 1 



2 





39 82 55 49 28 20 16 9 2 



Totals 



11 

 37 

 52 

 46 

 55 

 31 

 27 

 22 

 14 



4 



1 



300 



Fig. 180. — Correlation between diameter of straw, in ded- 

 millimeters, subject; and breaking strength of straw, in 

 grams, relative oqq , Qny 



