several Ancestor to the total Heritage of the Offspring. 411 



Table IV. — Tricolour coefficients. 



Personal allowance of T for each 

 (No allowance for Non-tricolours.) 



Ancestry known up to and inclusive of 



Grandparents. 



Great-grandparents. 



'2500 

 0-0625 



-2500 

 -0625 

 -0156 



A -rs AAofvn 1 oil ATTQ Yl "FnT Pfl <** ll 



-0408 

 -0243 



'0102 

 0061 



I 



Table V. — Calculation and Observation Compared. 



The pedigrees are ntilised np to the second ascending generation. 

 Sex not taken into account. 



No. of 

 tricolours 



in 

 parents. 





1 



Number of tricolours in grand- | Total tricolour 

 parents. 1 offspring. 



1 



1 1 

 4 1 3 I 2 



1 1 



1 



Calculated. 



Observed. 



a 



< 



bcei 





Tilno 







119 

 0-91 



119 



83 



28 

 0-76 



11 



0-68 







Tricolour calc'd. 

 „ observed 



108 

 106 



99 

 101 



21 

 24 



8 

 8 



236 



239 





37 

 0-66 



158 

 0-58 



60 

 0-51 



6 



0-43 







Tricolour calc'd. 

 „ observed 



24 

 20 



92 

 79 



30 

 36 



3 

 4 



449 



139 







.. 



18 



0-26 



6 



0-18 







Tricolour calc'd. 

 „ observed 







5 

 7 



1 

 2 



6 



i 



9 



387 



