| Date | Person | Description |
|---|---|---|
| Cibot, Pierre-Martial | Occupied himself with astronomy, mechanics, medicine, chemistry, botany, geology, mineralogy, zoology, Chinese writing system | |
| 1808 – 1820 | Condrau, Jakub | Teacher of physics, mechanics, botany, zoology, higher mathematics in Polotsk |
| Pézenas, Esprit | Occupied himself with mathematics, astronomy, astronomical observations, cartography, navigation, scientific instruments, logarithms |