First edition. Small octavo. 105pp. Quarter cloth gilt and printed paper over boards. Bookstore label on rear pastedown, spine gilt dull, and corners a bit bumped and worn, a very good copy. Inscribed by the author: ""To Dr. Louis Freedman from his friend B. Sidis."" Sidis was a psychologist, physician, psychiatrist, and philosopher. His son William James Sidis, was reported as having the highest recorded I.Q. and postulated the existence of black holes well before any others. An exceptionally scarce title to be found signed.