National Geographic : 1945 Jan
The National Geographic Magazine Formosa's Sway-backed Swine Are Identical with Those of South China Like Rats Gnawing, These Woodcutters Whittle Away on a Camphor Tree Stump See their tool marks on the stump and the rude perch they sit on. Chips are collected and cooked in the making of gum camphor. Large forest areas of camphor trees have been planted in Formosa to replace wild trees that were exhausted by cuttings. To an increasing extent since the war, synthetic camphor has been manufactured in the United States (page 19).