After this he returned to Petrograd, taking up teaching at the three institutions he had previously taught at, and adding a further teaching position at the Naval Academy. Hunter writes:
Pagkatapos na ito siya bumalik sa Petrograd, taking up pagtuturo at ang tatlong institusyon niya dati nagtuturo sa, at ang pagdaragdag ng isang karagdagang pagtuturo posisyon sa Naval Academy. Hunter magsusulat: