Home Index Site Map Up: Glassmaking Navigation
Up: Glassmaking

First: Reminiscences of Glass-Making · Page i Last: Reminiscences of Glass-Making · Page 123 Prev: Reminiscences of Glass-Making · Page 108 Next: Reminiscences of Glass-Making · Page 110 Navigation
Reminiscences
112 of 123

·i ·23 ·48 ·73 ·98
·iii ·24 ·49 §74 ·99
·iv ·25 ·50 ·75 ·100
§1 ·26 ·51 §76 ·101
·2 ·27 §52 ·77 ·102
·3 ·28 ·53 §78 ·103
·4 ·29 ·54 ·79 ·104
·5 ·30 ·55 §80 §105
·6 ·31 ·56 ·81 ·106
·7 ·32 ·57 ·82 ·107
§8 §33 ·58 ·83 ·108
·9 ·34 ·59 ·84 ·109
·10 ·35 ·60 ·85 §110
·11 §36 ·61 ·86 §111
·12 ·37 ·62 ·87 §112
·13 ·38 ·63 ·88 ·113
·14 ·39 ·64 ·89 §114
·15 ·40 ·65 ·90 §115
·16 ·41 ·66 ·91 ·116
·17 ·42 ·67 ·92 §117
·18 §43 ·68 §93 ·119
·19 ·44 ·69 ·94 ·121
·20 ·45 ·70 ·95 ·123
·21 ·46 ·71 §96
·22 ·47 ·72 ·97
 
TURQUOISE.
To 1100 lbs. flint batch add
90 " phosphate of lime,
15 " arsenic,
15 " calcined brass dust.
VIOLET.
To 100 lbs. flint batch add
1 " calcined brass,
" zaffre.
    Receipts for window-glass are as numerous as for flint. The following are in general use in England, so says Gillender:--

CROWN GLASS.
Sand, 1400 lbs.
Quick lime, 480 "
Sulphate of soda, 560 "
Charcoal, 25 "

PLATE GLASS.
Sand, 300 lbs.
Sulphate of soda, 450 "
Quick lime, 100 "
Nitre, 25 "
Charcoal, 5 "

DIAMOND GLASS.

    Four pounds of borax, one pound of fine sand; reduce both to a subtile powder, and melt them together in a closed crucible set in an air furnace, under a strong fire, till fusion is perfect. Let it cool in the crucible, and a pure, hard glass, capable of cutting common glass like a diamond, which it rivals in brilliancy, is produced.