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INDUSTRIALAND ENGINEERING CHEMISTRY 749 crawling are different from those which give rise to the defects produced upon baking. A change in the balance of the simple mechanical forces involved in the equilibrium between adhesion and cohesion probably accounts for these differences.Changes in polarity of the materials during baking which, in turn, would affect the interfacial tension at varnish-metal interfaces, also probably play an important part. This work is being continued.

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We have just observed that ethyl phenyl sulfide with n-butyllithium gives o-ethylmercaptobenzoic acid.

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