| In 1735, Joseph de Jussieu, a French botanist, collected detailed information about the cinchona trees. |
| Hahnemann carried out tests on himself with extracts of cinchona bark, which contains quinine, and found it caused fever. |
| The pope replied: I send you with all my heart my blessing, but I recommend you also to take some cinchona! |
| Malaria victims were treated with quinine, an extract from the bark of the cinchona tree. |
| In the mid-seventeenth century, Spain began to import the bitter bark of cinchona trees from Peru and Ecuador as an antidote for malaria. |
| The cinchona tree is native to the eastern slopes of the Andes Mountains in South America. |
