▁the ▁family ▁business ▁that ▁he ▁had ▁inherited ▁in ▁ 1 7 4 4 , ▁in ▁order ▁to ▁purchase ▁the ▁office ▁of ▁Con tr ôle ur ▁Gén éral ▁de ▁la ▁Grande ▁Chan cell erie , ▁a ▁s ine c ure ▁that ▁allowed ▁him ▁to ▁dev ote ▁the ▁rest ▁of ▁his ▁life ▁to ▁his ▁research es ▁and ▁to ▁increasing ▁his ▁celebrated ▁collection . ▁He ▁concentr ated ▁on ▁prints ▁and ▁draw ings , ▁but ▁also ▁included ▁paint ings , ▁bron zes ▁and ▁ter rac ott as . ▁Among ▁his ▁great ▁draw ings ▁was ▁a ▁Michel ang elo ▁study ▁of ▁a ▁n ude ▁for ▁the ▁S ist ine ▁Chap el . ▁He ▁shared ▁Cro zat ' s ▁taste ▁for ▁the ▁draw ings ▁of ▁Rub ens : ▁at ▁Cro zat ' s ▁sale ▁he ▁purchased ▁si xty - two ▁of ▁the ▁fin est ▁for ▁his ▁own ▁collection . ▁When ▁his ▁collections ▁were ▁dispers ed ▁at ▁au ction ▁after ▁his ▁death , < ref > The ▁sale ▁catalog ue ▁is ▁F rit s ▁L ug t , ▁Ré per toire ▁des ▁catalog ues ▁de ▁v entes ▁publi ques ▁ 1 6 0 0 - 1 9 0 0 , ▁ 1 8 5 2 .</ ref > ▁ 1 2 6 6 ▁draw ings ▁were ▁acquired ▁by ▁the ▁Crown ; ▁they ▁now ▁form ▁part ▁of ▁the ▁collection ▁at ▁the ▁Bibliothèque ▁nationale . ▁The ▁albums ▁of ▁more ▁than ▁ 3 5 0 0 ▁prints ▁mounted ▁on ▁fine ▁paper , ▁which ▁ ▁had ▁been ▁begun ▁by ▁his ▁father , ▁Jean ▁Mar