The name of Liedenbrock was honourably mentioned in colleges and learned societies. Humphry Davy,[2]Humboldt, Captain Sir John Franklin,General Sabine, never failed to call upon him on their way through Hamburg. Becquerel, Ebelman,Brewster, Dumas, Milne-Edwards, Saint-ClaireDeville frequently consulted him upon the most difficult problems in chemistry, a science which was indebted to him for considerable discoveries, for in 1853 there had appeared at Leipzig an imposing folio by Otto Liedenbrock, entitled, "A Treatise upon Transcendental Chemistry," with plates; a work,however, which failed to cover its expenses.