Marco's Comments:
Second edition, revised and augmented, of the Jeans' biography, one of the most sought-after books on Magic History. The second edition is formed by copies numbered 500-1,000, thus mine is actually the 153rd copy.
Interesting book, although not too detailed: Warlock worked with a small autobiography (up to 1925) of Jeans, which is included in the book, without carrying out many other searches on him.
Nevertheless, Walter Jeans was certainly an interesting character and I would have liked to be able to read more about him and his ideas.