78 



INITIATIVE IN EVOLUTION 



called the M axillaris, downwards and outwards, by a small thick 

 muscle, the Corrugator, inwards, by a deeper and more oblique 

 muscle, the Nasalis, downwards and inwards, and a little more 

 remotely by the Temporal muscle, and the intrinsic muscles of the 

 mobile ears. There are thus at least five muscles on each side, all 

 pulling more or less against one another on this much -disturbed 



Fig. 32.— Frontal region of 



horse with frontal whorl (a) ; 



feathering (6) ; crest (c). 



Fig. 32a. — Muscles of the 



fronto -nasal region of the 



horse. 



area of skin. The struggle has been long ago given up and a com- 

 promise arrived at which is registered in the frontal pattern. 



Now if anyone doubts whether these comparatively small 

 muscles act often or strongly enough to produce effects on the hair 

 over them he need only consult Mr. Roger Pocock's book to under- 

 stand the story of this battle of small forces and its result on the 

 hair. 



In his wild state the horse is dependent to a remarkable degree 



