London: Downey & Co. 1896. Later printing. 128 pages. 4 7/8 x 7 1/8 inches. Printed paper boards. Some foxing, especially to first and last few pages. Boards are foxed. Some damage to paper spine panel. Several old dealer notations including prices on the endpapers. A later printing with Sixth thousand on the title page and front cover. Stilll an early and desirable work. Good. Boards. 
Contains four sections: X-rays, Colour photography, Psychic photography -- Retinal impressions -- Spirit photography and finally Anaglyphs. Skeleton hand printed in bold black on front cover.
The author in his preface gives an honest account of his work - chiefly to provide a popular account of these subjects in more detail than newspaper and magazine accounts had done by that point, and in particular X-Rays which Roentgen announced "a few weeks ago". He gives credit where due, including to F. E. Ives for his work on color photography. Reproduces several x-ray images from various accounts. The Preface is dated Feb. 1896.