252 HARRIS: RELATIONSHIP OF OVULES TO SEEDS 
To obtain the probable number of seeds developing in any class 
of pods the number of ovules is multiplied by P. 
In carrying out the arithmetic of the calculation of r,, by the 
“brute force’’ method all the deviations were written down to 
six decimal places. The values of 7, are: 
Calculated by formula 
Cae iy Ol tees Sac SHEE ee eee alte —.046315 
GC SICHIBteR LG, DEULG TOLCes UG dee a Vids is les es nie de —.046311 
PHI te de tara aie bi wie seb A eigoa ue eee We Ae me ea .000004 
Comments are superfluous. 
| aoegaan. 
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o N Z IN 
21, fe 
2/ ZERO DEVIATION 
WwW Bape 
» 3 = 
Be 
= 
OFlLoO Pen 
iv 
* , 
Q 
et n 7 
pee - \ 
¥ 5 \ ee 
a fe) ‘ 
rm z \ 
w \ Lt 
o \ 
z \ 
wr 
Of*°| REGRESSION OF DEVIATION , 
< | OF SEEDS PER POD FROM ‘ 
> Tf" -THE PROBABLE ON OVULES : 
. \ 
Ol<9| PERPOD : 
\ 
| | \ ——_ 
| ’ 
J } ad L 3 j “ l & if , 
lL 
OVULES PER POD. 
Frc. 3 
Having actually obtained the deviations of the fertility of the 
individual pods from the probable fertility, it is easy to calculate 
the mean deviation for the arrays associated with different 
ed 
