24 moments

1. Birth at Verkhnie Aremzyani

   1834-02-08 · Verkhnie Aremzyani, Tobolsky District, Tyumen Oblast, Russia

   

   Mendeleev was born in the Siberian village of Verkhnie Aremzyani, near Tobolsk. Village-level coordinate from the settlement gazetteer location.

2. Entered Tobolsk Gymnasium

   1841-01-01 · Tobolsk, Tyumen Oblast, Russia

   He began formal secondary education at the Tobolsk gymnasium. Coordinate represents Tobolsk; the historical gymnasium site is not specified in the source.

3. Journey to Moscow for university admission

   1849-01-01 · Moscow, Russia

   

   His mother took him from Siberia to Moscow in an unsuccessful attempt to enroll him at Moscow University. Coordinate represents central Moscow; the source does not identify a specific university building visited.

4. Relocation and enrollment in Saint Petersburg

   1850-01-01 · Saint Petersburg, Russia

   After Moscow refused admission, the family relocated to Saint Petersburg, where Mendeleev entered the Main Pedagogical Institute. Coordinate represents central Saint Petersburg; the source does not specify the institute building.

5. Science teacher at Simferopol Gymnasium

   1855-01-01 · Simferopol, Crimea

   Ill health led Mendeleev to Crimea, where he taught natural science at the male gymnasium in Simferopol. Coordinate represents Simferopol; the historical gymnasium building is not identified.

6. Teaching at the Richelieu Lyceum gymnasium

   1855-01-01 · Odessa, Ukraine

   Later in 1855–1856, Mendeleev taught at the gymnasium attached to the Richelieu Lyceum in Odessa while recovering his health. Date is recorded at year precision because the source gives a 1855–1856 interval.

7. Return to Saint Petersburg

   1856-01-01 · Saint Petersburg, Russia

   Restored health enabled Mendeleev to return to Saint Petersburg and continue his scientific career. Coordinate represents central Saint Petersburg.

8. Research period in Heidelberg

   1859-01-01 · Heidelberg, Baden-Württemberg, Germany

   

   Mendeleev worked in Heidelberg on liquid capillarity and spectroscopy during his foreign research period. Date marks the start of a documented 1859–1861 stay; coordinate represents Heidelberg.

9. First International Congress of Chemistry

   1860-09-01 · Karlsruhe, Baden-Württemberg, Germany

   Mendeleev participated in the Karlsruhe Congress, an early international meeting of chemists that addressed disputed chemical fundamentals. The Karlsruhe Congress was held 3–5 September 1860; the source supporting Mendeleev's attendance specifies only the year.

10. Marriage at Nikolaev Engineering Institute church

    1862-04-27 · Nikolaev Engineering Institute, Saint Petersburg, Russia

    Mendeleev married Feozva Nikitichna Leshcheva in the church of the Nikolaev Engineering Institute, where he taught. Coordinate is an approximate representative point for the historical institute area.

11. Professor at Saint Petersburg Technological Institute

    1864-01-01 · Saint Petersburg Technological Institute, Saint Petersburg, Russia

    Mendeleev became a professor at the Saint Petersburg Technological Institute, beginning a major phase of higher-education teaching. Coordinate represents the modern institute campus area.

12. First visit to Boblovo estate

    1865-01-01 · Boblovo Estate, Boblovo, Moscow Oblast, Russia

    The professor visited Boblovo, the country estate that became a recurring place of residence and work for him. Coordinate represents the Boblovo estate museum area.

13. Tenure and inorganic chemistry teaching

    1867-01-01 · Saint Petersburg University, Saint Petersburg, Russia

    

    At Saint Petersburg University, Mendeleev obtained tenure and began teaching inorganic chemistry, work closely associated with his later periodic-system research. Coordinate represents the historic Twelve Collegia university building.

14. Centennial Exposition visit

    1876-01-01 · Fairmount Park, Philadelphia, Pennsylvania, United States

    During his American journey, Mendeleev stopped in Philadelphia and attended the Centennial Exposition at Fairmount Park. Coordinate represents Fairmount Park, the exposition grounds.

15. Pennsylvania oil-fields investigation

    1876-01-01 · Pennsylvania oil region, United States

    

    On behalf of the Russian government, Mendeleev visited Pennsylvania oil fields to study production and refining practices. Coordinate is a representative point at Titusville in the western Pennsylvania oil region, rather than a documented individual refinery.

16. British Association meeting

    1887-01-01 · Manchester, England, United Kingdom

    

    Mendeleev spoke on water and alcohol at the British Association for the Advancement of Science meeting in Manchester. The source supports year precision but not a specific day or meeting venue.

17. Balloon ascent for solar-eclipse observation

    1887-08-19 · Klin, Moscow Oblast, Russia

    

    Mendeleev made a solo ascent in the balloon Russky from Klin to observe the total solar eclipse after the intended pilot left the basket. Date is 19 August 1887 Gregorian, explicitly paired with 7 August Old Style in the source; coordinate represents Klin.

18. Departure from London before Faraday Lecture

    1889-06-04 · London, England, United Kingdom

    Mendeleev was in London immediately before departing early on the day his Faraday Lecture was to be read to the Chemical Society; he left because of his child's severe illness. The contemporaneous notice identifies Tuesday as 4 June 1889; coordinate represents the Royal Institution area, though the quote documents London rather than a precise building.

19. Director of the Bureau of Weights and Measures

    1893-01-01 · Bureau of Weights and Measures, Saint Petersburg, Russia

    Mendeleev was appointed director of the Bureau of Weights and Measures, a Saint Petersburg post he retained until his death. Coordinate is a representative point for the historic metrology institution in Saint Petersburg.

20. Kyshtym visit on Ural expedition

    1899-01-01 · Kyshtym, Chelyabinsk Oblast, Russia

    After returning through Tyumen and Yekaterinburg, Mendeleev continued to Kyshtym during the final stage of his Ural industrial inspection. Source supplies the itinerary and year but not a specific Kyshtym arrival date.

21. Return to Tobolsk on Ural expedition

    1899-01-01 · Tobolsk, Tyumen Oblast, Russia

    

    Mendeleev's personal Ural-expedition route took him by steamer from Tyumen to Tobolsk, returning him to his native region. Source identifies the expedition as summer 1899 but does not provide an arrival date at Tobolsk.

22. Arrival at Nizhny Tagil during Ural expedition

    1899-06-28 · Nizhny Tagil, Sverdlovsk Oblast, Russia

    

    During the Ural industrial expedition he arrived at Nizhny Tagil station, then proceeded to meet local industrial managers and inspect the district. Coordinate represents Nizhny Tagil; the historical station location is approximate.

23. Active participation in Paris Exposition

    1900-01-01 · Paris, France

    Mendeleev actively participated in the Paris Universal Exposition and served as a vice-president of its international jury. Coordinate represents central Paris; the source does not identify a particular exposition building or date.

24. Death in Saint Petersburg

    1907-02-02 · Saint Petersburg, Russia

    

    Mendeleev died in Saint Petersburg at age 72. The date is the Gregorian date given in the article infobox; coordinate represents central Saint Petersburg.