THE FOOT 



68 1 



larger amount than where the heels are high and rigid. 

 The measurements obtained by the writer with very delicate 



A B 



Fig. 241. — Diagrams to show the Area over which the Wall expands, and 

 to illustrate the Retreat of the Anterior Coronary Edge of the 

 Hoof, and the Sinking of the Heels (Lungwitz). 



A, The unbroken outline shows the shape of the foot with no weight on it ; the 

 dotted outline illustrates the retreat of the coronary edge in front and sinking 

 of the heels. The shaded part illustrates the area which expands. 

 In this figure the hoof is looked at from above ; the unbroken outline is the 

 coronary edge from heel to heel. The dotted line shows the change in shape 

 it undergoes under the influence of the weight of the body. 



B 



Fig. 242. — Apparatus for Measuring Expansion of the Foot. 



The gauge is adjusted to different levels of the wall by means of a block ; it 



registers from -^th to -fe inch. 



apparatus were smaller than those obtained in Germany 

 by Lungwitz. On an average there was obtained, by simply 



