318 MorplioJo(jii of the Fruit of Sanffuinaria Canadensis 
TABLE 7. 
Correlation between Length of Fruit and Number of Ovules Formed 
and Seeds Developing per Placenta and per Fruit. 
Eelationship between Length of Fruit and 
Coirelatioii and Probable Error 
1906 
1907 
Difference 
Ovules on First and on Second Placenta 
Total Ovules pei- Fruit 
Seeds on First and on Second Placenta ... 
Total Seeds per Fruit 
Aborted Ovules on First and on Second Placenta 
Total Aborted Ovules per Fruit 
•517 ±-016 
•527 + -015 
•552 + ^015 
•576 ± •Oil 
•078 + ^021 
•085 + ^021 
•638 + ^020 
•656+^019 
•661 + •oig 
•688 + -018 
•023 + ^034 
•025 + ^034 
+ ^121 + -025 
+ •131+025 
+ •109 + ^024 
+ •112 + ^023 
-•106 + -040 
- •110+^040 
The equations to the regression straight lines for length of pod and ovules per 
placenta and for length of pod and seeds developing per placenta in the tw^o series 
are given in Table 8. Table 9 affords a comparison of r and rj for these relation- 
ships. 
TABLE 8. 
Equations to Regression Straight Lines for Fertility Characters 
on Pod Length. 
Regression of Fertility Characters on Pod Length 
Equation to Straight Line 
Ovules per Placenta on Pod Length, 1906 ... 
Seeds per Placenta on Pod Length, 1906 ... 
Ovules per Placenta on Pod Length, 1907 ... 
Seeds per Placenta on Pod Length, 1907 ... 
//= •063 + ^378.j; 
.//= -2-115 + •344,1' 
^ = - 4-000 + •324.r 
y= - 7^438+ •332.r 
TABLE 9. 
Comparison of r and r} and Blakemans Test for the lAuear-ity of Regression 
for Fruit Length and Fertility Characters. 
Relationship 
Coefficient of 
Correlation, ?■ 
Correlation 
ratio, 7] 
Ovules and Length, 1906 
Seeds and Length, 1906 
Ovules and Length, 1907 
Seeds and Length, 1907 
•517 + ^016 
•552 + ^015 
•638 + -020 
•661 + ^019 
•532 + -015 
•552 + ^015 
•637 + -020 
•677 + ^018 
•016 
•021 
2-971 
2-160 
