72 



STUDIES IN THE EVOLUTION OF ANIMALS 



shoulder and haunch, as in the lower Horse of the same figure. In 

 many cases the white-grey Horse has nothing but the reticulations 

 of the superficial veins to mark the places of former pigment 

 reticulations, these having wholly disappeared, and having been 

 replaced by a iiniforni white colour. 



"^ 









Fig. 41. — (a) and {i) are from the right hind-legs of two different Horses ; (c) is from a 

 light-bay Cart-horse (Whit iVIonday Show) ; (d) is a fern-like dappling over the superficial 

 vein of the fore-leg of a dark-brown Horse (Whit Monday Show). 



Certain well-dappled grey Horses have a very peculiar mark, 

 like a fern-frond, which is pretty constant on the hind-legs, on the 

 fleshy part between the heel and knee,''- which is plainly visible in 

 Fig. 36. This also coincides with a similarly disposed venous 

 ramification on that particular part of the Horse's hind-leg. In the 

 accompanying diagram (Fig. 41) are given three branching veins 



1 Anatomical heel and knee are here meant, and not the veterinary terms. 



