Wilson — The Origin of the Dexter-Kerry Breed of Cattle. 15 



Tliafc is, one pure black animal, two that look black, but are really 

 hybrids, and one pure red animal. 



This is what happens with Dexters in the matter of colour. But they 

 vary in respect of form also, tlie essential difference being in the length of 

 the leg.' A short-legged race has been bred with a tall race ; and tlie short- 

 ness of the one is dominant over the tallness of tlie otiier. Let S represent 

 shortness of leg and t tallness. When hybrids are bred together, they 

 come out thus : — 



^^^f>^ . 8 S t t ' 



)\ gives ^. / o , 



f^^^t ^ ^ t S t 



That is to say, there are one pure short-legged, two that look short 

 but are hybrids, and one pure tall animal. 



But it must be remembered that all tliese auimals are involved iu the 

 colour variation also. How are we to represent the two-fold variation of form 

 and colour ? Take one set of animals, say tlie short-legged ones. Among 

 every four there must be one pure black one, two hybrid black-reds, and 

 one pure red one. Then these four short-legged animals may be represented 

 as regards both form and colour thus: — 



The other three sets of animals, ?, '<-„ and , , may be similarly 

 represented. 



If we display all these cases symmetrically, we shall see more clearly tlie 

 resiills (if liieediiig Dexter with Dexter. 



SB SB SB SB 



SB Sr tB tr 



1 Stoutness of body is couconiitiint with sliortness of leg 



