80 A MANUAL OF MENDELISM 



Sires With Bay With. Black With Chest- 



Dams Dams nut Dams 



Pure /By\ 

 VBy/ 



bays 



Bays 



carrying 



black 



in n lA 



+J +J -w 



3 3 3 



C 2 C 2 "^ 



^ ^ I ^ rt I ^ 



u pq m o w « u 



/ByX 



ing VBl ) 



Ql) 



Bays {^y\ " xxxxxxx 



carrying 



chestnut 



Pure 

 blacks 



Blacks 



carrying 



chestnut 



(b1) 



The table on page 81 gives the actual progeny of 84 

 Shire horses with dams of all three colours, from which 

 it will be seen that sires of the five expected kinds can 

 be identified. Obviously erroneous entries are again 

 enclosed within brackets. 



In one case only are the errors serious, that, namely, | 

 in which 16 black foals are found among the progeny 'I 

 of the 36 bay sires with chestnut mares. One of the 

 chief errors in registration is that of calling a very dark 

 brown horse black ; and, of the 16 foals, 5 were the 

 progeny of a horse so very dark brown that he was 

 frequently referred to as black. The other 11 foals 

 were in all probability similarly sired. 



But what of the remaining colours, grey and dun ? 



