110 ERNEST WARREN. 



direction (i. e. looking fvon\ above the spirals run from 

 left to right), and not in opposite directions. It would 

 be interesting to ascertain if such is generally the case 

 in abnormalities of this nature, since the slight spiral 

 tendencies in the normal hoofs of a foot are in opposite 

 directions (see figure). It is possible that the fact of the 

 spirals running in the same direction for the two abuormal 

 hoofs may be due to the essentially asynnnetrical nature 

 of the two hoofs of a ruminant, as they are the third and 

 fourth digits of the typical pentadactyle limb. 



On inquiry Miss Moor further informs me that in the case 

 of the right foot both of the twisted hoofs grew in the same 

 spiral, but that this spiral ran in an opposite direction (i. e. 

 from right to left) to that of the left foot. 



(2) The rudimentary hoofs of the fetlock show a distinct 

 tendency for abnormal growth (see figure) ; thus the causes 

 which produced the abnormality were effective over the 

 whole of the foot, and the abnormality was not due to a 

 mere local disturbance in the growing bases of the hoofs 

 of the third and fourth dig-its. 



EXPLANATION OF PLATE XIV, 



Illustrating Dr. Ernest Warren's paper on " Note on the 

 Abnormal Hoofs of a Sheep." 



Fig. 1. — Plantar surface of normal left hind foot of Kafir sheep. 

 (Natural size.) 



Fig. 2. — Plantar surface of abnormal left hind foot of supposed 

 cross between Mei-ino and Kafir sheep. (Natural size.) 



