678 GLOVE MANUFACTURE 



Our Importations of glass have been us follow in tne years given : 



GLAUBER'S SALTS (the Sal cartharticus Glauberi, or Sal mirabile Glauberi). 

 Sulphate of soda was discovered by Glauber in 1658. Its composition is : soda, 19'24 ; 

 sulphuric acid, 24'76 ; water, 56-00 ; total, 100-00. 



GLAUCONITE. A mineral occurring generally in the form of dark green 

 grains, which give a colour to certain rocks, especially to the Cretaceous Greensands. 

 The grains are said to be, in many cases, casts of Foraminifera. Glauconito is a 

 hydrous silicate of iron, alumina, potash, &c; 



GLAZES. See POTTERY. 



GLAZIER, is the workman who cuts plates or panes of glass with the diamond, 

 and fastens them by means of putty in frames or window casements. See DIAMOND, 

 for an explanation of its glass-cutting property. 



GLAZING. The process of giving a hard polished surface to bodies. Paper is 

 glazed by the use of resins, gelatine, &c. See PAPER. Pottery is glazed by the use 

 of certain fusible materials. See POTTERY and PORCELAIN. Some metals are said to 

 be ' glazed ' when, by means of polishing-wheels, the highest finish is put upon their 

 surfaces. 



GLIMMER. Many talcose and micaceous minerals were so called by the old 

 miners. Werner applied the term to several varieties of mica ; and Haidinger gave 

 it to the species known as Muscovite. The terms Glimmer and Glidder are still ap- 

 plied by Cornish miners to the pearly shining surfaces of seven il minerals and to clays. 



GLOVE MANUFACTURE. In. February 1822, Mr. James Winter of Stoke- 

 under-Hambdon, in the county of Somerset, obtained a patent for an improvement 

 upon a former patent machine of his for sewing and pointing leather gloves. Fig. 

 1105 represents a pedestal, upon which the instrument called the jaws is to be placed. 



