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To Prevent Mould in Mucilage

Solutions of gum-arabic are very liable to become mouldy; and while the introduction of SEALING-WAX. creosote, corrosive sublimate, etc., frequently 1 per cent. of balsam of Peru or liquid storax used to remedy this evil, is objectionable on to the ingredients when considerably cooled. account of the danger of poisoning, according The fancy kinds are commonly scented with a to the "Industrie Blätter," sulphate of quinine little essence of musk or ambergris, or any of is a complete protection against mould, a very the more fragrant essential oils. The addition small quantity of it being sufficient to prevent of a little camphor, or spirit of wine, makes gum mucilage from spoiling. It is quite pos- sealing-wax burn easier. Sealing-wax consible that writing ink might be protected, by the same application, from a like difficulty.

The use of ammonia for the same purpose is also recommended. 2306. Elastic Glue which does not spoil is obtained as follows: Good common glue is dissolved in water, on the water-bath, taining resin, or too much turpentine, runs into thin drops at the flame of the candle.