Experiments and their Verification 



169 



extension in Elaine and Clay. This is a characteristic of good hock 

 action, or should be so, and again shows how propulsion is effected 

 by an equal backward and forward swing of the leg rather than by 

 too much low and forward extension. 



FJG. 7JS 



65 per cent 



C t> 



3) Average totaf action 



te per cent 



Genera? average of the four subjects given 

 Showing comparative magnitude of act /b/? re- 

 ofi/ceci fo a common basis, and an average, 

 for total fore atwl Mot/ hinol action 



Let us now compare the elevations of the feet. We find the 



following figures: 

 Subject. 



1. Elaine 



2. Occident 



3. Edgington 



4. Clay 



Average 6 (-60) 10 



The elevations are all specially given in Fig. 134 for each sub- 

 ject discussed and again in Fig. 135 2) as a general average of the 

 proportion between the elevations of hind and fore feet. From that 



