. Types and market classes of live stock. r«s5 barssole- Fig. 85. The Parts of the Hoof. pecially on the legs and coronet, is associated with hornof coarse texture. Therefore the more coarse and brittle thehair about the coronet, the more porous, brittle, and weak willbe the formation of the horny hoof. The wall horn consists of three layers known as (1) theouter or perioplic layer, (2) the middle or coronary layer, and(3) the inner or laminous layer. The perioplic layer is verythin. It is varnish-like in appearance and forms the surfaceor crust of the wall. Its function is to preserve the moi
. Types and market classes of live stock. r«s5 barssole- Fig. 85. The Parts of the Hoof. pecially on the legs and coronet, is associated with hornof coarse texture. Therefore the more coarse and brittle thehair about the coronet, the more porous, brittle, and weak willbe the formation of the horny hoof. The wall horn consists of three layers known as (1) theouter or perioplic layer, (2) the middle or coronary layer, and(3) the inner or laminous layer. The perioplic layer is verythin. It is varnish-like in appearance and forms the surfaceor crust of the wall. Its function is to preserve the moistureof the foot and to absorb moisture. A horse working in sandor dust usually has this outer layer worn away. The coronarylayer forms the real basis of the wall. At the heels it is de-flected forward to form the bars of the hoof. The angle be-tween the wall and bar is thickened and is called the buttress. 312 Types and Market Classes of Live Stock The function of the bars is to react against contraction of theheels. The laminous layer
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