Although there are dozens of different types of gems, among the best known and most important are […] . (Common gem materials not addressed in this article include amber, amethyst, chalcedony, garnet, lazurite, malachite, opals, peridot, rhodonite, spinel, tourmaline, turquoise and zircon.)

When there are undercuttings in the bass-relief, so that the plaster poured upon it would run into cavities, from which it could not be drawn up, but would break in them, these undercuttings must be filled up with plaster […]

Run these logs through the barker so we can use them as fence posts.

Coordinate term: barb