| |
| |
Glass |
 | | Glass is a combination of sand, flint, spar, or some other silicious substances, with one or other of the fixed alkalies, and in some cases with a metallic oxide. |
 | | When the coating or mixture is thus prepared, the glass is to be coated by means of a camel's-hair brush, or squirrel's-foot, etc. It is then to be exposed to a heat sufficient to produce a semivitrification of the coaty surface, and to incorporate it with the substance or body of glass so coated. |
 | | This glass, will be very soft, and will not bear much water, if employed for rings, buckles, or such imitations of stones as are exposed to much rubbing; but for ear-rings, ornaments worn on the breast, or such others as are but seldom put on, it may last a considerable time. |
| www.sharelynx.com /web/cyclopedia/glass.html (8041 words) |
|