National Geographic : 1940 Feb
(0 National Ijeographic society Roaacnrome oy vv'liara n. quiver COLOR AND CRACKLE MARK THE MAKING OF FLOOR TILE Like giant jaws grinding mammoth wads of chewing gum, this calender mottles and presses out compounded rubber. Kitchen and other wall designs also are blended in this way before the sheets are vulcanized. Kodachrome byJ.Baylor Roberts HERE'S WHERE YOUR TIRE BEGINS A ribbed smoked rubber sheet isdisplayed byaTamil Indian onan estate of steamy, tropical Malaya. Size ofthesheets hasnotvaried since they first were shipped in tea chests.