1 8 4 7 - 4 8 . ▁He ▁translated ▁— ▁and ▁commented ▁on ▁— ▁all ▁major ▁medieval ▁and ▁early ▁modern ▁Georg ian ▁chron ic lers ▁and ▁published ▁them ▁in ▁seven ▁volumes ▁from ▁ 1 8 4 9 ▁to ▁ 1 8 5 8 . ▁His ▁mag num ▁op us , ▁Histoire ▁de ▁la ▁Gé org ie , ▁was ▁a ▁long - standing ▁authority ▁on ▁the ▁history ▁of ▁Georgia . ▁He ▁also ▁published ▁the ▁correspond ence ▁between ▁the ▁cz ars ▁and ▁the ▁k ings ▁of ▁Georgia ▁from ▁ 1 6 3 9 ▁to ▁ 1 7 7 0 . ▁ ▁He ▁devoted ▁the ▁years ▁ 1 8 6 1 – 1 8 6 8 ▁mainly ▁to ▁his ▁series ▁on ▁Armen ian ▁histor ians , ▁but ▁continued ▁to ▁work ▁on ▁them ▁until ▁ 1 8 7 6 . ▁ ▁Over all , ▁B ros set ▁wrote ▁over ▁ 2 5 0 ▁works ▁on ▁Georg ian ▁and ▁Armen ian ▁history ▁and ▁culture . ▁ ▁He ▁left ▁Russia ▁in ▁May ▁ 1 8 8 0 ▁et ▁and ▁retired ▁at ▁his ▁daughter ' s ▁in ▁Ch ât eller ault . ▁He ▁died ▁there ▁a ▁few ▁months ▁later , ▁September ▁ 3 . ▁His ▁son ▁Laurent ' s ▁analyt ic ▁bibli ography ▁was ▁a ▁major ▁contribution ▁to ▁the ▁knowledge ▁of ▁his ▁life ▁and ▁works . ▁ ▁Works ▁ ▁List s ▁of ▁works ▁▁ ▁B ros set , ▁Laurent . ▁Bibliographie ▁analyt ique ▁— ▁ 2 7 1 ▁titles , ▁not ▁counting ▁supp lement s . ▁Al phabet ical