this citation summarizes a one-page announcement of technology available for utilization. cotton, rayon, and linen can now be treated to accept almost all major classes of dyes. without treatment, cotton and other cellulosic fibers don't accept acid dyes, which are used for dyeing wool and some synthetic fibers, or insoluble dyes in an aqueous dispersion (disperse dyes), also used for synthetic fibers. the cellulosic fibers are soaked in a solution of aqueous alkali metal hydroxide and then treated with a thioarylsulfonium salt solution to make the fibers receptive to the dyes. these fibers can then be blended with synthetic fibers such as polyester or with natural fibers such as wool. dipping such fabric blends into a bath with two very different types of dyes produces a bicolored fabric, with each fiber type accepting a different dye. or, if desired, they can be treated with one dye for a uniform shade previously, natural fibers were treated to accept one class of dye, such as acid or disperse dye. now they can be treated to accept two or more dye classes in one bath. not only are the number of dyeing steps reduced, but the new treatment makes the fabric more colorfast than could be obtained with untreated material. the treated fabric allows for a versatility of dyeing not attainable with unmodified cellulose blends, accepting many dyes under a wider range of ph conditions than is possible for unmodified fibers