A small glazed frame for the protection of plants. / A small mirror with a handle.

A bell glass for covering plants. / A globe of dark-coloured glass, mounted on a pedestal, to reflect surrounding objects; much used as an ornament in gardens in Germany.

A kind of glass that is highly permeable to ultraviolet rays.

A heavy optical glass, consisting essentially of potassium borosilicate.

The fused material for making glass.

A silicate of sodium or potassium, found commercially as a white, glassy mass, a stony powder, or dissolved as a viscous, syrupy liquid; used for making fabrics fireproof, for hardening artificial stone, etc.

A vitreous oxide of antimony mixed with sulfide.

An instrument consisting of a glass tube with terminal bulbs, and containing ether or alcohol, which the heat of the hand causes to boil.

A glass tube for a water gauge.

Sheet glass made by blowing the glass in the form of a cylinder which is then split longitudinally, opened out, and flattened.