66 



GRACE P. HAYS 



the hands and feet, and the correspondence between the skeletal 

 irregularities and the irregularities of the muscles, pads, and 

 claws. 



Externally each of the two fore paws (fig. 1) shows two toes, 

 and the skeleton reveals a pronounced symmetry. The con- 

 dition of the skeleton of the hind feet is less regular. Externally 

 the left hind paw has two toes and the right hind paw, three 

 (fig. 2). These skeletal abnormalities may be seen by comparing 

 the skiographs of the feet of this cat (figs. 3 and 5) with the skio- 

 graphs of the feet of a normal cat (figs. 4 and 6). 



Fig. 1 Dorsal view of the fore feet of the abnormal cat. 



In describing the bones reference will be made to the diagrams 

 rather than to the skiographs. It must be remembered that the 

 .skiographs are shadow pictures and the prints therefore represent 

 a mirror image of the actual condition. The foot on the right 

 of the skiograph, then, must be compared with the diagram of 

 the left foot. Certain discrepancies may be noticed between 

 the diagrams and the skiographs. It was impossible to flatten 

 the foot absolutely under the X-ray and, as a result, the pictures 

 are a little distorted. The diagrams are drawn with the aid of 

 dividers from the dorsal side of the actual bones. 



