| Date | Person | Description |
|---|---|---|
| 1808 – 1820 | Condrau, Jakub | Teacher of physics, mechanics, botany, zoology, higher mathematics in Polotsk |
| Lippay, János | Occupied himself with botany, horticulture, agronomy | |
| Soares, Diogo | Occupied himself with astronomy, cartography, geography, natural sciences, botany, topography, fieldwork |