It is merely the outside surface that requires to be pumiced.
In these cases the horn is soft, often white, and stringy or mealy, as seen in pumiced sole resulting from founder.
Treated in this way, the animal with pumiced feet may yet be capable of earning his living at light labour or upon a farm.
When dry the surface is pumiced and brushed and a second coat applied in a similar manner, but with increased care.
The horse would be equally free from "drop" and "pumiced" sole, seedy toe, thrush, and kindred complaints.
This is dried and pumiced, and a fine coating of japan or copal varnish is finally given.