Cinchona ledgeriana" had a yield of 8 to 13 percent quinine in bark grown in Dutch Indonesia which effectively out-competed the British Indian production. It was only later that the English saw the value and sought to obtain the seeds of "C. ledgeriana" from the Dutch. During World War II, the Japanese conquered Java and the United States lost access to the cinchona plantations that supplied war-critical quinine medication. Botanical expeditions – called Cinchona Missions – were launched in 1942-1944 to explore promising areas of South America in an effort to locate cinchona species that contained quinine and could be harvested
Bark spud (tool) Bark spud (tool) The Bark spud, (also known as a Peeling Iron, Peeler Bar, Peeling Spud, or abbreviated to Spud) is an implement which is used to remove bark from felled timber. Most bark spuds have steel heads and wooden handles, typically hickory or ash. The head is curved, sometimes in one direction with a single cutting edge, and sometimes more dish shaped and sharpened on three sides. In use, the sharpened edge is slid between the bark and the wood, removing the bark from the tree in a number of strips. It is especially useful at removing bark without