Absorption bands have been observed at 2.60mgr;, 2.30mgr;, 1.81mgr;, 1.30mgr;, 1.22mgr;, 1.04mgr;, 0.87mgr;, 0.79mgr;, 0.75mgr; and 0.67mgr; in aqueous solutions of hydroxides and hydrolyzing salts. From the behavior of the salt solutions the bands at 2.60mgr; and 1.81mgr; were found to be characteristic of the hydroxide molecule, while the band at 2.30mgr; was found to be characteristic of the OH ion. It was found that if the 2.30mgr; band, and the 3.65mgr; and 5.20mgr; bands previously observed were considered as fundamentals, the remaining bands observed could be classified as harmonics.
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