Pedzisa mutsara unotevera: Durand akaberekerwa muMayenne, France, akadzidza kuva kemisiti uye murimi wemishonga muMayenne kubva muna 1808 kusvika muna 1812, akadzidza zvemishonga muParis, uye paakapedza kudzidza muna 1813 akabatana neboka ravanachiremba veuto raNapoleon. Akashanda kwemwedzi 14, uye akanga aripo muhondo dze
Lützen, Bautzen, Hanau, Katzbach, uye Leipzig. Muna 1814 akasiya basa rake, ndokuva muchengeti wemishonga muNantes kwaakadzidza botany zvakanyanya kwemakore maviri. Pashure pokuwa kwaNapoleon, akafungidzirwa nezvemaitiro aNapoleon, uye akaenda kuNew York City muna 1816.