THE MEASUREMENT OF THE INTENSITY OF INBREEDIKG. I3I 







Pedigree Tabee II. 





0+ 



1 







> 

 



00 



10 



CO 



is 



No. 35913 c? 



Sisera's Stoke 

 Pogis 



No. 26271 d 

 Juno's Stoke Pogis 



No. 14207 c^ 

 Alphea's Stoke Pogis 



CO 



No. 14436 9 

 Carlo's Juno 





No. 37346 '? 



Sisera 



No. 18811 (^ 

 Duchess Stoke Pogis 





No. 6246 9 

 Edith Darby 





No. 79860 

 Baltimore 



No. 19350 c? 

 Patrick Favvkes 



No. 10469 d 

 Regal Ko£fee 





No. 21574 9 

 Kermesse 





No. 17900 9 

 Avoca 2nd 



No. 3286 . c? 

 Champion's Son 





No. 17769 9 

 Avoca 



CH- 



1 



<u 

 «o 



CO 



d 

 53 



No. 35913 6"- 



e 



Sisera's Stoke 

 Pogis 



No. 26271 c? 



X 



Juno's Stoke Pogis 



No. 14207 d" 

 X Alphea's Stoke Pogis 





No. 14436 9 

 X Carlo's Juno 





No. 87346 9 



X 



Siaera 



No. 18811 d^ 

 X Duchess Stoke Pogis 





No. 6246 9 

 X Edith Darby 





No. 126626 9 

 Kate Weaver 



No. 36382 c? 

 General Kelly 



No. 19350 cf 

 ® Patrick Fawkes 





No. 95606 9 

 © Balm 



in 

 10 



No. 95606 9 

 Balm 



No. 7056 . (^ 

 America's Champion 



d 



!2; 



No. 95605 9 

 Maid of Gilead 2nd 



In the twelfth ancestral generation the theoretically possible 

 number of different ancestors is 4096. In a relatively long 

 pedigree, such as arises in dealing with registered cattle, it 

 would obviously be an extremely tedious business to determine 

 the value of q by direct counting, as has been done in the 

 preceding simpler illustrations. The calculation of the coeffici- 

 ents of inbreeding may be greatly simplified in the case of long 

 pedigrees by a system of counting which makes the line of 



* The illustrations from actual pedigrees used in this abstract are not 

 the same as those used in the complete paper. The two illustrations here 

 given are chosen because of their probably greater interest to the Sta- 

 tion's constituency. 



