Wellingborough Thorsons Publishers Ltd. 1985. 95 p. Paperback 21.5 cm First published in 1891. Pencil marginalia in K. Critchlow's new introduction paperback
Breslau Hirt 1935. 32 p.; 92 pls. Cloth. 27 cm Plates in slipcaseName and small inscription on title; cloth browned and a bit soiled slipcase worn and browned hardcover
London Routledge & Kegan 1956. XVIII376 p. Cloth 22 cm Small traces of sellotape on the endpapers. Used pencil annotations and underlinings hardcover
NY Liberal Arts Press 1960; c1945. Soft Cover. iv pages 1 leaf 143 1 pages; 20 cm. First edition Cambridge UP 1945. From the library of Prof. Vincent Tomas of the Brown University Department of Philosophy. Vg / soft cover. Stock#102718. Liberal Arts Press paperback