We have reproduced the book written in 1922 by Matthew Luckiesh on optical illusions, Titled - Visual Illusions: Their Causes, Characteristics and Applications. It was probably the first book to comprehensively cover the topic of Optical Illusions. This book is chock full of optical illusion information. It will be of interest to both the person who is fascinated by optical illusions and asks, "How do optical illusions work?" and also to the person doing serious research who wants the scientific explanation of optical illusions.