
No. 427.] ABNORMALITY IN CATS’ PAWS. 515 
two. Such an inference, however, is not borne out by the 
evidence of other muscles and tissues. 
Muscles extensor communis digitorum and extensor minimi 
digiti (Figs. 5, 6, ext.com.dg. and ext.min.dg.) in both normal 





Fic. 8. 

Fic. 7. l asp f right f normal cat, showing di tion of deep muscles. 
ext.ix., extensor indicis; ex£.»f'carf. poll., extensor metacarpi pollicis. 
Fic. 8.— Dorsal f righ f polydactyle cat, showi deep muscles as in 


Fig. 7- (See text for description of ext.ix.r and ext.iz.2.) 
and polydactyle paw extend to the proximal dorsal surface of 
the middle phalanx of each of the four external digits. The 
distribution of these muscles points to the inference that the 
