It is a high grade block, or " splint " coal, remarkably free from sulphur and rich in carbon, peculiarly adapted to blast furnace use.
The limbs, especially the cannon-bones, are relatively short, and the splint-bones large.
The large metacarpal is called in veterinary anatomy " cannon bone"; the small lateral metacarpals, which gradually taper towards their lower extremities, and lie in close contact with the large one, are called " splint bones."
Supra-angular and coronoid splint-bones serve for the insertion of part of the temporal or masseter muscle.
The maxillaries are connected with the distal anterior corner of the quadrate by the thin, splint-like jugal and quadratojugal.