Surbed

Do they dip or lye in piano horizontis? Whether better surbedded, in work, or laid as they grew in the bed?

It is a freestone, cutting in all directions; yet has something of a grain parallel with the horizon, and therefore should not be surbedded.

400mm wide X 200mm thick, bedded and jointed in 1:3:12 white cement:lime:sand mortar, all stones to be free of quarry sap and not laid surbedded.