▁for ▁his ▁research ▁involving ▁the ▁formation ▁of ▁coal . ▁ ▁He ▁studied ▁sciences ▁in ▁Paris , ▁where ▁he ▁had ▁as ▁influ ences ▁botan ist ▁Joseph ▁Dec ais ne ▁and ▁plant ▁phys i ologist ▁Pierre ▁Paul ▁De her ain . ▁In ▁ 1 8 7 4 ▁he ▁obtained ▁his ▁doctor ate ▁in ▁sciences , ▁and ▁was ▁later ▁appointed ▁professor ▁of ▁bot any ▁at ▁the ▁University ▁of ▁L ille ▁( 1 8 7 8 ). ▁From ▁ 1 8 8 1 ▁to ▁ 1 8 8 7 , ▁he ▁was ▁head ▁of ▁the ▁Archives ▁bot ani ques ▁du ▁nord ▁de ▁la ▁France . ▁ ▁In ▁ 1 8 7 8 ▁he ▁became ▁a ▁member ▁of ▁the ▁Société ▁botan ique ▁de ▁France . ▁He ▁was ▁the ▁father ▁of ▁botan ist ▁Paul ▁Charles ▁Éd ou ard ▁Ber tr and ▁( 1 8 7 9 - 1 9 4 4 ). ▁ ▁Part ial ▁list ▁of ▁publications ▁▁ ▁An atom ie ▁compar ée ▁des ▁t iges ▁et ▁des ▁feu illes ▁chez ▁les ▁g né ta cies ▁et ▁chez ▁les ▁con if ères , ▁ 1 8 7 4 ▁- ▁Compar ative ▁an atom y ▁of ▁the ▁st ems ▁and ▁leaves ▁of ▁G net aceae ▁with ▁con if ers . ▁ ▁Tra ité ▁de ▁botan ique ▁à ▁l ' usage ▁des ▁asp ir ants ▁au ▁grade ▁de ▁lic enci é ▁è s ▁sciences ▁nature lles ▁et ▁au ▁grade ▁d ' agr ég é ▁des ▁l yc ées ▁pour ▁les ▁sciences ▁nature lles , ▁ 1 8 8 1 .