C73 



Of the Shoe with ajlat upper Surface* 



A ^loe perfectly flat on its upper surface, such 

 as is here represented, and broader than the 

 crust, would in many cases press on part of the 

 sole, if the sole v/ere to be left entire ; but, in order 

 to prevent this, it has been recommended to cut 

 away part of the sole itself, so as to form a hol- 

 low between it and the shoe. It can scarcely be 

 doubted but that a cavity between the shoe and 

 the sole is necessary, not only to prevent actual 



