GLUE
Adair's New Encyclopedia · 1923 · p. 2
is an impure gelatin with strong adhesive properties.—Bone Glue is made by di olving grease out of bones by petroleum. The de-greased bones are _ then steamed under pre ure in cylinders with false bottoms, The glue-liquor collects below the false bottom, is clarified with alum, and concentrated in vacuo to 30% dry glue. The liquor, bleached by sulphur dioxide, is allowed to cool to a jelly —Fish Glue has a disagreeable odor. Glue should be free from grit, and of uniform golden color. Cold water should soften and swell it and hot water di olve it. own, ernigov, S.W. Ru ia; kaolin mining. Pop. 15,000. -
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