Word: hydrous
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Dates: during 1930-1939
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...being ruined by the application of new backings with glue when they are being rebuilt. This practice is absolutely ruinous because the glue attracts dampness.* Let me point out to the chemists of the world that there is an excellent field for them in the search for a non-hydrous glue." Mechanical-minded Professor Koegel of the Karlsruhe Technical High School came forward with a new method of registering the authenticity of paintings: two wafer-thin sections are to be sawed from a steel cable, one inlaid in the painting, the other deposited in a central identification office. Microphotography will...
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