| Dr de Vrij states that the substance known under this name is a mixture of hydrochlorate of cinchonidine and of cinchonine. |
| Tartrate of potash and soda indicate, under these circumstances, only the presence of cinchonidine. |
| It is nothing more than quinidine, or cinchonidine, or a mixture of both. |
| This talk will outline the first report of cinchonidine in North America and correlate its source with folklore. |
| If it is chemically pure, cinchonidine belongs to the non-fluorescent alkaloids. |
| Red bark contains not only quinine and cinchonine, but also cinchonidine. |
