246. Bookbinders' Paste.—Mix wheaten flour first in cold water, then boil it till it be of a glutinous consistence; this method makes common paste. Mix a fourth, fifth, or sixth of the weight of the flour of powdered alum, and if required stronger, add a little powdered resin.
247. Rice Glue.—Mix rice flour smoothly with cold water, and simmer it over a slow fire, when it will form a delicate and durable cement, not only answering all the purposes of common paste, but well adapted for joining paper and card-board ornamental work.
248. A most excellent Glue.—Beat an ounce of isinglass to shreds: dissolve it gradually in a pint of brandy, by means of gentle heat, and then strain the solution through a piece of fine muslin. The glue thus obtained should be kept in glass closely stopped. When required for use, it should be dissolved with moderate heat, when it will appear thin, transparent, and almost limpid. When applied in the manner of common glue, its effect is so powerful as to join together the parts of wood stronger than the wood itself is united. This glue dries into a very strong, tough, and transparent substance, not easily damaged by anything but aqueous moisture, which renders it unfit for any use where it would be much exposed to wet or damp air.
249. Parchment Glue.—Take one pound of parchment, and boil it in six quarts of water till the quantity be reduced to one, then strain off the dregs, and boil it again till it be of the consistence of glue.
The same may be done with glovers' cuttings of leather, which make a colorless glue, if not burnt in the evaporation of the water.