Cinchona lost their plants when a wave took them off their ship. The Dutch sent Justus Hasskarl who brought plants that were then cultivated in Java from 1854. The English explorer Clements Markham went to collect plants that were introduced in Sri Lanka and the Nilgiris of southern India in 1860. The main species introduced were "Cinchona succirubra" or red bark, as its sap turned red on contact with air, and "Cinchona calisaya". The alkaloids quinine and cinchonine were extracted by Pelletier and Caventou in 1820. Later two more key alkaloids, quinidine and cinchonidine were identified and it became a routine
Bark painting ancestral journey, but also shows where an airstrip was built. Notable bark painters include: Yirrkala bark petitions Bark painting Bark painting is an Australian Aboriginal art form, involving painting on the interior of a strip of tree bark. This is a continuing form of artistic expression in Arnhem Land and other regions in the Top End of Australia including parts of the Kimberley region of Western Australia. Traditionally, bark paintings were produced for instructional and ceremonial purposes and were transient objects. Today, they are keenly sought after by collectors and public arts institutions. The designs seen on authentic bark paintings