Entitled: "Jewels" shows a portion of a woman's leg and foot wearing a shoe strapped into a bejeweled roller skate. The four-wheeled turning roller skate, or quad skate, with four wheels set in two side-by-side pairs( front and rear ), was first designed by James Leonard Plimpton. The skate contained a pivoting action using a rubber cushion that allowed the skater to skate a curve just by pressing his weight to one side or the other, most commonly by leaning to one side. The design of the quad skate allowed easier turns and maneuverability, and the quad skate came to dominate the industry for more than a century. Roller skating is a recreational activity, a sport, and a form of transportation. Photographed by Jessie D. Allardice, October 5, 1920.