glass grinder (glasgrinder)

One whose occupation is the grinding and polishing of gla . gla -grinding (glas'grinding), n. The proce of grinding gla as a preparation for polishing it, or for the production of ground gla . gla -hard (glas'härd), a. Hard as gla . Two similar rods of steel, 1.8mm, in diameter and 6cm, long, tempered gla - hard , one inserted in each spiral. Amer. Jour. Sci ., 3d ser., XXXI. 257. gla -house (glas'hous), n. 1. A house where gla is made; a manufactory of gla . - 2. A greenhouse, as being glazed or covered in with gla . See gla house, under gla , a.-3. А room with a gla roof, in which the best arrangements of light and shade can be produced for photographing purposes. By looking at some point on the camera, which is situ ated in the darkest part of the gla - house, the eyes will be able to remain quite at ease. Silver Sunbeam, p. 43. 2532 ing imparted to the gla in the making. By this latter method were made the splendid medieval windows of the thirteenth century, the beautiful color-effects of which have thus far defied imitation, in spite of modern perfected methods. These admirable color-effects are now recog nized to be due not only to perfection of the colors used, and to their judicious juxtaposition and skilful combination with white gla to relieve them and hinder where desirable the blending of contiguous tints, but to unevenne of tone and thickne of the gla primarily due to imperfect proce es of manufacture. This last quality is now being imitated made by with hand, artistic as ordinary succe , machine-made such gla in general gla is nece arily of even thickne and shade. A combination of the enamel and mosaic methods, known as the mosaic- enamel method , in which part of the design is in mosaic and part in enamel, is now commonly used. 2. A painting upon gla ; a surface of gla decorated in color by the use of stained gla or painting, or both. gla -paper (glas'pā"per), n. A fine kind of sandpaper made with powdered gla . gla ily (glas'i-li), adv. In a gla y manner; rubbing with gla -paper. in such a way as to resemble gla .