Imprint on cover: London, presented to the members of the Shelley Society, 1886. Prefatory notice signed: H.S.S., W.E.A.A. [i.e. Henry S. Salt and William E.A. Axon]. With reproduction of original t.p.: A vindication of natural diet. Being one in a series of notes to Queen Mab (A philosophical poem). London: Printed by J. Callow ... by Smith & Davy ... 1813.