National Geographic : 1940 Feb
RUBBER BLOCKS MARK THE BIRTH OF A GOLF BALL SOLID CORES AREUNLOADED AFTER VULCANIZING A pill mold presses the cubes into spheres (page 191). Sometimes hollow centers are filled with liquid. GUTTA-PERCHA IS MOLDED FOR COVERS CUPLIKE COVERS ARE CUT FROM SHEETS This kind of latex from several varieties of Malaysian trees, not Hevea The game of golf originated inHolland. Formerly the balls were covered brasiliensis, gives great resiliency and toughness. with leatherand stuffed with feathers.