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To the Editor:
—In blackening table tops, a good deal of time is lost and the laboratory appears upset for several days.The following mixture is readily prepared from the solutions kept in stock for other purposes, gives excellent results, and saves a lot of time:This is applied with a brush, and allowed to dry for two hours. A second coat is applied, which is allowed to dry over night. With the aid of a hot laundry iron or an electric plate, paraffin of a high melting point is dissolved on the table. Oxidation takes place as the bubbling paraffin is absorbed by the wood.Excess of paraffin is removed with a cloth saturated with xylene, and the table is ready for use.Soft wood and oak give the same results.
Lowenthal S. DRESSING FOR LABORATORY TABLES. JAMA. 1924;83(14):1097–1098. doi:10.1001/jama.1924.02660140055027
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