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- Never-yielding Cement
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- The Leech A Prognosticator Of The Weather
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- To So Fill A Glass With Water That It Cannot Be Removed Without
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To Form Figures In Relief On An Egg








Design on the shell any figure or ornament you please, with melted
tallow, or any other fat oily substance; then immerse the egg into
very strong vinegar, and let it remain till the acid has corroded that
part of the shell which is not covered with the greasy matter: those
parts will then appear in relief, exactly as you have drawn them.





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