136 DISEASES OF THE HORSE’S FOOT 
degree of incline by saying that the outer margin of the 
bearing surface of the shoe should be from ;5 to § inch 
lower than the inner. 
In the case of the Broué slipper, it is the animal’s own 
weight that brings about the widening of the heels, the 
slope or outward incline of the slipper simply causing the 
inferior edge of the wall at the heels to spread itself out- 
wards instead of sliding inwards on the bearing surface of 
the shoe. 
Fic. 77.—Tue Siipper SHOE oF Brovus. 
(e) Hinsiedel’s. — Like the ‘slipper’ of Broué, the 
Hinsiedel shoe depends for its effects upon the slope of the 
bearing surface. 
It differs from the Broué in being provided with a ‘ bar- 
clip.’ This, in addition to gripping the bars like the bar- 
clips of other expanding shoes, also assists, under the body- 
weight, in expanding the heels by the pronounced slope 
given to its upper surface. The expanding force exerted by 
the body-weight falls thus, through the medium of the bar- 
Fic. 78.—-THE SLIPPER AND Bar-cuie SHOE oF EINSIEDEL. 
clip, partly upon the bars, instead of, as in the Broué, 
solely upon the wall. We say partly advisedly, for, in 
addition to the slope upon the outer side of the bar-clips, 
the bearing surface of the heels of the shoe is slightly sloped 
outwards also. The good office served by the bar-clip is 
the lessening of any tendency to strain upon the white 
line. 
Those we have described by no means exhaust the 
number of expansion shoes that have been devised. There 
