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By Giles B. Cooke, R. C. Rollins and G. Taylor (Auth.)

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He showed phellonic acid to be a saturated hydroxy acid and he believed it to have a cyclic structure. V o n Schmidt also isolated another acid which he called phellogenic acid and to which he assigned the formula C21H40O4. 0 3 50 35) 3 52 (36) 2 (37) (38) (39) <30) (40) (41) (30) 0 4 2 2 2 3 42 0 1 7 n 3 0 2 1 3 4 (43) 28 CORK A N D THE CORK TREE In 1916 Scurti and Tommasi made additional studies on phellonic acid and believed it to be alpha-hydroxybehenic acid, C H ( C H ) C H O H C O O H . They also carried out research on the other acids o f cork but did not propose formulas.

Trimmings, scrap and other small pieces are ground and screened into various sizes. Only cork of the best quality can be used for this important part of cork manufacturing and the methods o f granulating and preparing the cork remove all traces o f any impurities that might be present. Composition cork is manufactured by binding together clean soft granules of cork with a suitable adhesive. The adhesive is applied in such a manner that it forms only a very thin film of coating about each cork particle.

Composition cork might well be called the complement of natural cork. While the manufactured product has in many instances replaced the natural article, at the same time composition cork has supplemented the applications of natural cork and widened the field which cork serves. In fact, the applications o f composition cork today are so extensive and multitudinous that almost everyone, whether he knows it or not, depends upon cork for some important service, either directly or indirectly, every day.

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