The Great Britain's selling weapons and ammunition to the Circassians. The Russian coastal line of defense was built in 1830–1839 and consisted of 17 fortresses.

Two significant events had happened during this period:

First -  I defended my PhD thesis and received PhD diploma in maths in 1950.

Second -  I bought a house (dacha)  on the Black Sea  Shore in Sochi in 1952.

 Hotel in Gagra. Abhazia (1910).

The Botanical Garden in Sukhumi. Abhazia. (1910).

This information is taken from the diary of Adrian Fedorovich Timofeev (1882-1954) – the mathematician, socialist, revolutionary, financier and banker.

The full text of diary is on :

opentextnn.ru/history/familisarchives/Timofeyevs_family_Archives/Adrian_Timo