204 A Contribution to the Problem of Homotyposis 
TABLE A. 
Homotypic Correlations* for Cercis. 
Meramec 
Meramec 
Sharpsburg, 
Lawrence, 
Combination 
Highlands, Mo., 
Highlands, Mo., 
Ohio, 
Kansas, 
112 Trees 
60 Trees 
26 Trees 
22 Trees 
Ovules of First Pod 
and Ovules of Second 
Pod 
•3524 ± -0109 
•3527 ± ^0076 
•2768 ± -0100 
•3999 ± -0121 
Seeds of h irst Pod and 
Seeds of Second Pod 
•2677 -0116 
•2306 ± -0082 
•1798 ± ^0104 
•2019 ± •OISS 
Ovules Failing in First 
Pod and Ovules Fail- 
ing in Second Pod 
■0979 ± -0123 
•0684 ± -0087 
•1756 dz -0104 
•0858 ± ^0143 
Ovules of First Pod 
and Seeds of Second 
Pod 
•2758 ± ^0115 
•2622 ± ^0081 
•1173 ± ^0106 
•2574 ± ^0134 
Ovules of First Pod 
and Ovules Failing 
in Second Pod 
•0178 ± ^0125 
•0301 ± -0087 
•0762 ± '0107 
■1195 ± ^0142 
Seeds of First Pod 
and Ovules Failing 
in Second Pod 
- ^0570 ± ^0125 
- -0261 ± ^0087 
- •1095± -0107 
•0344 ± ^0144 
The regression equations for the two Meramec Highlands series appear in 
Table B. The regression lines for the direct relationships rg^g^, r^^^^ are given 
in Diagrams I and II, and for the cross relationships Tg^g^, Ts^g.^ in Diagrams III 
and IV. 
TABLE B. 
Regression Eqnaiions for Meramec Highlands Collection. 
2912 Pods 
6000 Pods 
02 = 3^0571 + ^352401 
S2 = 2^9563 + -267751 
/a = -6171 + -0979/1 
52 = 2-4485 + -336501 
/a = ^6089 + -015901 
/a = -8671 - -04535i 
02 = 2-9925 + -3527oi 
5, = 3-0018 + -230651 
fl = -6722 + -0684/1 
52 = 2-3982 + -325201 
/, = -5943 + -0275oi 
/a = -7965 - -0192si 
Inspection indicates that the regression of the ovules of the second pod 
(Diagrams I and II, upper lines) on the ovules of the first and of the seeds of the 
second pod (Diagrams III and IV, steeper lines) on the ovules of the first are 
linear. It is not so clear in the case of ovules or seeds of the second pod on seeds 
* All probable errors are calculated on the basis of the actual, not the weighted, number of pods. 
