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The TwinYarn Permanently Identifies WAITLOCK WATERFLEX Manila Rope OR the protection of users of Whitlock WATERFLEX Manila Rope against substitution, the distinctive identifying marker: illustrated above is used in all sizes 9/16 inch diameter and larger. A “‘fast-color’’ orange dye is used, and in addition to being readily visible, the marker is a component or working part of the rope itself. No amount of dirt, wear or water submersion can affect the permanence of this registered device; even in the case of a discolored or worn piece of rope the TwinYarn can be easily found. In our patented FIBORE type of construction, the marker consists of an orange and black color combination. The TIwinYarn registration, how- ever, covers this double-yarn device whether used without color or with any combination of colors. Whitlock WATERFLEX Manila Rope—FIBORE or all-yarn—offers many outstanding advantages at no additional cost. WHITLOCK CORDAGE COMPANY 46 South Street, New York Vol. 62, No. 4, Apr., 1932, issue of MarRINE Rrevirw, published month ly at Cleveland. O. Entered i » publis : O. as second cl ffice, Cleveland, Ohio, under the act of March 3, 1879. Subscription price $8. 00 a year in U.S.: Canada, $4.00; Great Sele, ae re ace 35.