as an acknowledgment of the propriety of the 

 principles just laid down, with this diflference 

 only, that the means of avoiding pressure on the 

 sole by the flat shoe, consist in cutting away pai t 

 of the sole itself, whilst with the seated shoe part 

 of the iron is removed, and the sole is left with 

 its natural thickness, as appears from the follow- 

 ing figure. 



Of ihe lower Surface of the Sfior 



As a general principle, it must be acknow^ 

 ledo-ed that the surface of the shoe, which is in- 

 tended to bear on the (yfound, should be of such 

 a form, as will afford the firmest tread. 



