INDEX

Aberration, 104

Acids, action of, on glass, 18, 19

Action of glass on , 45

Alkali, 23

Alumina, 9-11, 20

Amethyst, 31

Analysis of , 37

Ancient glass, 1

Annealing glass, 18

—— pots, 66

Arsenic, 31

Artificial eyes, 101

—— cements, 24

—— pearls, 31

Aventurine, 22-102

Barytes, 8-26

Basalt, 10

Bastie’s Process of hardening glass, 18

Batch, 11-13

Beads, 31-116

Black glass, 29

Blowing glass, 80, 82

Blow-iron, 80

Blue glass, 28

Bohemian glass, 25

Borates in glass, 7, 8, 9

Boric acid, 7

Bottle glass, 26, 27

Bottle-making, 77, 79

Bull’s eye, 90

Buttons, 116

Cane, 97

Capacity of pots, 51-52

—— of tank furnace, 56

Carbonate of soda, 6

Cements, 24

Chain screen, 68

Chair, Glassmakers’, 81

Chemical properties of glass, 4-15

Chemical Formulae, 12

Chimneys, Lamp, 16

Clays for pots and furnaces, 36

Coloured glasses, 28, 29

Colour of silicates, 11-22

Complex glass, 26

Composition of glass, 4-25

Compound glasses, 25

Conductivity of glass, 23

Continental glass, 3, 88, 118

Covered pots, 21-27

Cracking-off glass, 15, 17, 85

Crown glass, 26-89

Crucible pots, 21, 27, 64

Cullet, 10, 85

Cutting glass, 8, 10, 16

Decay in glass, 2

Decomposition, 2, 19

Decorated glass, 108

Decolorants, 32

Defects, 9, 23, 34

De-grading glass, 23

Density, 16

Devitrification, 3, 8, 20

Discovery of glass, 1

Doll’s eyes, 101

Education, Technical, 120

Electric furnaces, 58

Emerald, 31

Enamelling glass, 115

English type of furnace, 43

Engraving glass, 111

Etching, 19-112

Expansion, Thermal, 16

Eye of furnace, 43

Eyes, Artificial, 101

Fancy glass, 116

Filigree, 99

Fire-clay, 3, 11-36

—— analyses, 37

126Fire-clay, blocks, 39, 45

——, Burnt, 39, 41, 61

—— crucibles, 64

——, Grinding of, 39

——, Melting point of, 64

——, Mild, 39, 65

—— pots, 62

——, Properties of, 36-38, 41

—— rings, 65

——, Selection of 38

—— stoppers, 66

—— Strong, 39, 64

——, Tempering, 39, 61

——, Weathering, 39, 61

Flint glass, 4

—— stones, 4

Fluorspar, 8

Foot maker, 82

Formulas, 12, 21

Frisbie’s Feeder, 47

Furnaces, 21, 41, 51, 57

Fusibility of glass, 9

Gadget, 28

Garnet, 31

Gas-fired furnaces, 47, 51, 55

Gathering, 76, 77

Glass, Afterworkings of, 86

——, Alkalies in, 23

——, Alumina in, 9, 11, 20

——, Ancient, 2

——, Annealing, 71

——, Cane, 97

——, Coloured, 28

—— cloth, 101

——, Cut, 109

——, Enamelled, 115

——, Founding of, 69, 74

—— furnaces, 21, 41, 51, 56

——, Gauge, 18

——, Grinding of, 94

——, Hardened, 95

——, Homogeneity of, 23

—— house pots, 62

——, Moulds for, 77

——, Melting of, 69

——, Plasticity of hot, 4-16

——, Polishing of, 92-94

——, Properties of, 15

——, Process of making, 15, 76

——, Sand-blasted, 114

——, Scum on, 69

——, Seeds in, 105

——, Silvered, 116

—— snow, 101

——, Stress in, 74

——, Strengthened, 95

——, Temperature of melting, 20

——, Tube, 96

——, Types of, 15, 25

——, Wired, 95

—— wool, 101

——, Yellow, 28

Grinding tumblers, 110

—— plate glass, 92, 94

Hardened, 18, 23

Hermansen’s Furnace, 52, 53

History, 1

Homogeneity, 23

Honey pot making, 85

Hydrofluoric acid, 19

Introduction of glassmaking in England, 2

Iridescence, 21-101

Iron in glass, 32

Italian Aventurine, 102

Laboratory glass, 25

Ladling glass, 45

Lamp glass chimneys, 16

Lead glass, 21

—— poisoning, 14

Lehr, 71

Light and glass, 33

Lime glass, 25, 26

Machines in glassmaking, 79, 111

Mechanical boy, 86

Millefiore, 100

Moulds, 85

127Opalescent glass, 95-109

Opal glass, 29, 31

Optical glass, 5, 9, 33, 104

Oxidising agents, 7

Pearl ash, 6

Pearls, 31, 116

Phosphates in glass, 8

Polariscope, 74

Potash, 6

—— glass, 24

Pots, 8-13, 27-58

——, Annealing, 66

—— cracking, 45, 69

—— clays, 37, 64

——, Glazing, 69

——, Making, 62

——, Open, 21, 27, 64

——, Plumbago, 65

——, rings, stoppers, 63-65, 66

—— sherds, 65

——, Setting, 67

——, Trolley, 46

Plaining glass, 4, 51, 69

Plasticity, 11, 16

Plate glass, 26, 93

Plumbago, 65

Pressed glass, 26, 77

Pucellas, 82

Quartz glass, 19

Réaumur’s Porcelain, 17

Recipes for glass making, 25, 26

Recuperative furnaces, 52-54

Reduction in glass, 28, 31

Regenerative furnaces, 49

Rocaille flux, 25

Roman glass, 2

Ruby glass, 28, 31

Rupert drops, 18

Saltpetre, 7

Sands, 4

Sand-blast, 114

Scratching glass, 16

Screens for pot setting, 68

Seeds in glass, 4, 13, 105

Servitor, 83

Shearing glass, 81, 83

Sheet glass, 91

Siemens Furnace, 48

Siege of furnace, 43, 44

Silica, 4, 5

Silicates in glass, 24

Silvering glass, 116

Simple glasses, 24

Soda-lime glass, 21-26

Soft glass, 5

Soluble glass, 24

Spun glass, 15, 100

Stirring glass, 105

Strengthened glass, 95

Stress in glass, 18, 104

Striae, 9

Sulphates, 5, 25

Table glass, 25, 76, 77

Tank glass, 26, 57

Technical Education in glass manufacture, 120

Temperature of furnaces, 20, 105

Thermal expansion of glass, 16

Tin oxide in glass, 10

Tizeur, 43, 46

Tools, 76

Topaz, 31

Trades Unionism, 86

Tube, 26, 98

Tumblers, 85, 110

Turquoise, 31

Uranium, 28

Varieties of glass, 25, 102

Venetian glass, 2

Violet glass, 28

Waste glass, 30

Waterglass, 24

Wine-glass making, 82

Window glass, 1

Wired glass, 95

Working hours, 120

Zinc oxide, 9

Printed by Sir Isaac Pitman & Sons, Ltd., Bath, England

Transcriber’s Notes: Missing or obscured punctuation was silently corrected. Typographical errors were silently corrected. Inconsistent spelling and hyphenation were made consistent only when a predominant form was found in this book.