a rare, 1st edition copy of 
Crawford meets with multiple psychics, mediums, and clairvoyants, and runs scientific experiments on them while demonstrating their supernatural powers, in a controlled environment.
what were his findings?!
you'll have to read to find out!
a partially-related continuation of his previous book, "The Reality of Psychic Phenomena". this book can stand alone without having read his other works, though.

several photos and sketches demonstrating his experiments, room layouts, registered movements, etc.

CONDITION: 
overall pretty good looking for the age.
page 3/4 is completely detached, but still present.
there's a section of a few dozen pages wherein the text isn't centered properly on the page.
crack between pages at title page.
some yellowing/spotting on a few pages.

SPECS: 
7.5 x 5 x 1.25".
201 pages.
blue cloth hardcover.

check out my eBay store for more old and rare books from my personal collection that i'm trying to pare down. i have several others on occult and esoteric topics.