Petersburg, where he entered the MainPedagogicalInstitute in 1850.
After he graduated, an illness that was diagnosed as tuberculosis caused him to move to the Crimean Peninsula on the northern coast of the Black Sea in 1855, where he became chief science master of the local gymnasium.
Mendeleev became Professor of Chemistry at the Technological Institute and the University of St. Petersburg in 1863, achieved tenure in 1867, and by 1871 had transformed St. Petersburg into an internationally recognized center for chemistry research.
Saint Petersburg State University (Санкт-Петербургский Государственный Университет) one of the oldest Russian educational institutions, established in the city of Saint Petersburg on January 28, 1724 by decree of Peter the Great.
In the period between 1803 and 1819 the University formally did not exist; the institution founded by Peter the Great - Saint Petersburg Academy - had already been disbanded, whereas the institution that was later used as basis for the Saint Petersburg University was still known as the MainPedagogicalInstitute (Главный Педагогический Институт).
There is some degree of continuity between the Academy, the PedagogicalInstitute and the University.