Rub up the flour with the turpentine and then add sufficient freshly prepared glue (glue or gelatine dissolved in water) to make a stiff paste. This paste dries slowly.
| IV.— | Dextrine | 2 parts |
|---|---|---|
| Acetic acid | 1 part | |
| Water | 5 parts | |
| Alcohol, 95 per cent. | 1 part |
Dissolve the dextrine and acetic acid in water by heating together in the water bath, and to the solution add the alcohol.
| V.— | Dextrine | 3 pounds |
|---|---|---|
| Borax | 2 ounces | |
| Glucose | 5 drachms | |
| Water | 3 pints 2 ounces |
Dissolve the borax in the water by warming, then add the dextrine and glucose, and continue to heat gently until dissolved.
Another variety is made by dissolving a cheap Ghatti gum in limewater, but it keeps badly.
VI.—Add tartaric acid to thick flour paste. The paste is to be boiled until quite thick, and the acid, previously dissolved in a little water, is added, the proportion being about 2 ounces to the pint of paste.
VII.—Gum arabic, 50 parts; glycerine, 10 parts; water, 30 parts; liq. Stibii chlorat., 2 parts.
VIII.—Boil rye flour and strong glue water into a mass to which are added, for 1,000 parts, good linseed-oil varnish 30 parts and oil of turpentine 30 parts. This mixture furnishes a gluing agent which, it is claimed, even renders the labels proof against being loosened by moisture.
IX.—Pour 140 parts of distilled cold water over 100 parts of gum arabic in a wide-necked bottle and dissolve by frequent shaking. To the solution, which is ready after standing for about 3 days, add 10 parts of glycerine; later, 20 parts of diluted acetic acid, and finally 6 parts of aluminum sulphate, then straining it through a fine-hair sieve.