Paris: Clarke & Cie, 1899. [27] leaves, printed on rectos only. Coverture by H. de Toulouse Lautrec. Illustrated with 23 coloured plates. “Transparency” contained in pocket on verso of upper cover. Original cloth-backed boards; pictorial front board by Lautrec. 29.8 x 23.5cms. Browning to front and rear endpapers; transparency slightly damaged; slight wear to edges of boards; else an unusually good copy of a scarce optical book. By careful manipulation of the “transparency” over the surface of the illustration, the effect of movement can be achieved.