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This disadvantage no longer exists in the case of fabrikoid.

For this reason the use of a washable cloth for covers, such as keratol, durabline, or fabrikoid, is an advantage.

The best of these are durabline, used exclusively by Cedric Chivers; rexine and pluviusin, used almost exclusively in England; keratol, made in Newark, New Jersey; and fabrikoid, made by the du Pont Powder Company, Wilmington, Delaware.

Keratol and fabrikoid are made to imitate leather and are frankly sold as such.

The twenty-four volumes of Modern Business Texts are printed on dull finished paper and bound in Flexible Fabrikoid.