DEAN OF THE FACULTY OF SCIENCES OF PARIS;
PROFESSOR AT THE MUSEUM OF NATURAL HISTORY;
MEMBER OF THE INSTITUTE OF FRANCE;
FOREIGN MEMBER OF THE ROYAL SOCIETY OF LONDON,
OF THE ACADEMIES OF BERLIN, STOCKHOLM, ST. PETERSBURG, VIENNA,
KONIGSBERG, MOSCOW, BRUSSELS, HAARLEM, BOSTON, PHILADELPHIA, ETC.